Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications
This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering tem...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Prakash, Chander [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018transfer abstract |
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| Schlagwörter: |
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| Umfang: |
7 |
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| Übergeordnetes Werk: |
Enthalten in: Reconstructing historical atmospheric mercury deposition in Western Europe using: Misten peat bog cores, Belgium - 2013transfer abstract, surface engineering, surface instrumentation & vacuum technology, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:155 ; year:2018 ; pages:578-584 ; extent:7 |
| Links: |
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| DOI / URN: |
10.1016/j.vacuum.2018.06.063 |
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ELV043906087 |
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| 245 | 1 | 0 | |a Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications |
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| 520 | |a This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. | ||
| 520 | |a This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. | ||
| 650 | 7 | |a Corrosion resistance |2 Elsevier | |
| 650 | 7 | |a Elastic modulus |2 Elsevier | |
| 650 | 7 | |a Spark plasma sintering |2 Elsevier | |
| 650 | 7 | |a Magnesium alloy |2 Elsevier | |
| 650 | 7 | |a Mechanical integrity |2 Elsevier | |
| 650 | 7 | |a Bioactivity |2 Elsevier | |
| 650 | 7 | |a Mechanical alloying |2 Elsevier | |
| 700 | 1 | |a Singh, Sunpreet |4 oth | |
| 700 | 1 | |a Verma, Kartikey |4 oth | |
| 700 | 1 | |a Sidhu, Sarabjeet S. |4 oth | |
| 700 | 1 | |a Singh, Subhash |4 oth | |
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10.1016/j.vacuum.2018.06.063 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000866.pica (DE-627)ELV043906087 (ELSEVIER)S0042-207X(18)30707-3 DE-627 ger DE-627 rakwb eng 333.7 VZ 610 VZ 630 640 610 VZ Prakash, Chander verfasserin aut Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. Corrosion resistance Elsevier Elastic modulus Elsevier Spark plasma sintering Elsevier Magnesium alloy Elsevier Mechanical integrity Elsevier Bioactivity Elsevier Mechanical alloying Elsevier Singh, Sunpreet oth Verma, Kartikey oth Sidhu, Sarabjeet S. oth Singh, Subhash oth Enthalten in Elsevier Science Reconstructing historical atmospheric mercury deposition in Western Europe using: Misten peat bog cores, Belgium 2013transfer abstract surface engineering, surface instrumentation & vacuum technology Amsterdam [u.a.] (DE-627)ELV011955074 volume:155 year:2018 pages:578-584 extent:7 https://doi.org/10.1016/j.vacuum.2018.06.063 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_22 GBV_ILN_40 AR 155 2018 578-584 7 |
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10.1016/j.vacuum.2018.06.063 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000866.pica (DE-627)ELV043906087 (ELSEVIER)S0042-207X(18)30707-3 DE-627 ger DE-627 rakwb eng 333.7 VZ 610 VZ 630 640 610 VZ Prakash, Chander verfasserin aut Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. Corrosion resistance Elsevier Elastic modulus Elsevier Spark plasma sintering Elsevier Magnesium alloy Elsevier Mechanical integrity Elsevier Bioactivity Elsevier Mechanical alloying Elsevier Singh, Sunpreet oth Verma, Kartikey oth Sidhu, Sarabjeet S. oth Singh, Subhash oth Enthalten in Elsevier Science Reconstructing historical atmospheric mercury deposition in Western Europe using: Misten peat bog cores, Belgium 2013transfer abstract surface engineering, surface instrumentation & vacuum technology Amsterdam [u.a.] (DE-627)ELV011955074 volume:155 year:2018 pages:578-584 extent:7 https://doi.org/10.1016/j.vacuum.2018.06.063 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_22 GBV_ILN_40 AR 155 2018 578-584 7 |
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10.1016/j.vacuum.2018.06.063 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000866.pica (DE-627)ELV043906087 (ELSEVIER)S0042-207X(18)30707-3 DE-627 ger DE-627 rakwb eng 333.7 VZ 610 VZ 630 640 610 VZ Prakash, Chander verfasserin aut Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. Corrosion resistance Elsevier Elastic modulus Elsevier Spark plasma sintering Elsevier Magnesium alloy Elsevier Mechanical integrity Elsevier Bioactivity Elsevier Mechanical alloying Elsevier Singh, Sunpreet oth Verma, Kartikey oth Sidhu, Sarabjeet S. oth Singh, Subhash oth Enthalten in Elsevier Science Reconstructing historical atmospheric mercury deposition in Western Europe using: Misten peat bog cores, Belgium 2013transfer abstract surface engineering, surface instrumentation & vacuum technology Amsterdam [u.a.] (DE-627)ELV011955074 volume:155 year:2018 pages:578-584 extent:7 https://doi.org/10.1016/j.vacuum.2018.06.063 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_22 GBV_ILN_40 AR 155 2018 578-584 7 |
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10.1016/j.vacuum.2018.06.063 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000866.pica (DE-627)ELV043906087 (ELSEVIER)S0042-207X(18)30707-3 DE-627 ger DE-627 rakwb eng 333.7 VZ 610 VZ 630 640 610 VZ Prakash, Chander verfasserin aut Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. Corrosion resistance Elsevier Elastic modulus Elsevier Spark plasma sintering Elsevier Magnesium alloy Elsevier Mechanical integrity Elsevier Bioactivity Elsevier Mechanical alloying Elsevier Singh, Sunpreet oth Verma, Kartikey oth Sidhu, Sarabjeet S. oth Singh, Subhash oth Enthalten in Elsevier Science Reconstructing historical atmospheric mercury deposition in Western Europe using: Misten peat bog cores, Belgium 2013transfer abstract surface engineering, surface instrumentation & vacuum technology Amsterdam [u.a.] (DE-627)ELV011955074 volume:155 year:2018 pages:578-584 extent:7 https://doi.org/10.1016/j.vacuum.2018.06.063 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_22 GBV_ILN_40 AR 155 2018 578-584 7 |
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10.1016/j.vacuum.2018.06.063 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000000866.pica (DE-627)ELV043906087 (ELSEVIER)S0042-207X(18)30707-3 DE-627 ger DE-627 rakwb eng 333.7 VZ 610 VZ 630 640 610 VZ Prakash, Chander verfasserin aut Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications 2018transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. Corrosion resistance Elsevier Elastic modulus Elsevier Spark plasma sintering Elsevier Magnesium alloy Elsevier Mechanical integrity Elsevier Bioactivity Elsevier Mechanical alloying Elsevier Singh, Sunpreet oth Verma, Kartikey oth Sidhu, Sarabjeet S. oth Singh, Subhash oth Enthalten in Elsevier Science Reconstructing historical atmospheric mercury deposition in Western Europe using: Misten peat bog cores, Belgium 2013transfer abstract surface engineering, surface instrumentation & vacuum technology Amsterdam [u.a.] (DE-627)ELV011955074 volume:155 year:2018 pages:578-584 extent:7 https://doi.org/10.1016/j.vacuum.2018.06.063 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_22 GBV_ILN_40 AR 155 2018 578-584 7 |
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Synthesis and characterization of Mg-Zn-Mn-HA composite by spark plasma sintering process for orthopedic applications |
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This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. |
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This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. |
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This paper presents an investigation of design and development of low elastic modulus porous biodegradable Mg-Zn-Mn-HA composite for orthopedic applications via mechanical alloying and spark plasma sintering (MA-SPS) technique. The effect of MA-SPS process parameters like milling time, sintering temperature and sintering pressure have been studied on the structural porosity, elastic modulus and hardness of as-synthesized composite. The percentage of structural porosity was determined by Archimedes method and the elastic modulus and hardness of as-synthesized alloy were measured by the nano-indentation method. HA compound induced composite not only refined the grain but also enhanced porosity, which favoured osseointergation. The microstructure examination of the MA-SPS synthesized composite reveals the formation of high degree of structural porosity (15–25%), witnessed at low alloying time and high temperature. Sintering pressure enables pores reduction and induces an additional driving force for the compaction and sintering temperature assists the powder particles to coalesce, which subsequently reduces the porosity, densified the compact, and enhanced the mechanical properties. XRD pattern analysis confirmed the formation of MgCaO, β-TCP, Mn-CaO, and Ca-Mg-Zn phases, enhanced mechanical properties and corrosion characteristics. The degradation rate of Mg-Zn-Mn-HA alloy was reduced from 1.98 mm/year to 0.97mm/year by the alloying of HA elements. |
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