Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics
Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermog...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ling, Hung C. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1990 |
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| Schlagwörter: |
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| Anmerkung: |
© Chapman and Hall Ltd 1990 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of materials science - Kluwer Academic Publishers, 1966, 25(1990), 7 vom: Juli, Seite 3297-3308 |
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| Übergeordnetes Werk: |
volume:25 ; year:1990 ; number:7 ; month:07 ; pages:3297-3308 |
| Links: |
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| DOI / URN: |
10.1007/BF00587690 |
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| Katalog-ID: |
OLC2046169859 |
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| 520 | |a Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. | ||
| 650 | 4 | |a Compaction | |
| 650 | 4 | |a Oxalate | |
| 650 | 4 | |a Yttrium | |
| 650 | 4 | |a Green Density | |
| 650 | 4 | |a BaCO3 | |
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10.1007/BF00587690 doi (DE-627)OLC2046169859 (DE-He213)BF00587690-p DE-627 ger DE-627 rakwb eng 670 VZ Ling, Hung C. verfasserin aut Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics 1990 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chapman and Hall Ltd 1990 Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. Compaction Oxalate Yttrium Green Density BaCO3 Enthalten in Journal of materials science Kluwer Academic Publishers, 1966 25(1990), 7 vom: Juli, Seite 3297-3308 (DE-627)129546372 (DE-600)218324-9 (DE-576)014996774 0022-2461 nnns volume:25 year:1990 number:7 month:07 pages:3297-3308 https://doi.org/10.1007/BF00587690 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2057 GBV_ILN_4082 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4323 GBV_ILN_4700 AR 25 1990 7 07 3297-3308 |
| spelling |
10.1007/BF00587690 doi (DE-627)OLC2046169859 (DE-He213)BF00587690-p DE-627 ger DE-627 rakwb eng 670 VZ Ling, Hung C. verfasserin aut Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics 1990 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chapman and Hall Ltd 1990 Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. Compaction Oxalate Yttrium Green Density BaCO3 Enthalten in Journal of materials science Kluwer Academic Publishers, 1966 25(1990), 7 vom: Juli, Seite 3297-3308 (DE-627)129546372 (DE-600)218324-9 (DE-576)014996774 0022-2461 nnns volume:25 year:1990 number:7 month:07 pages:3297-3308 https://doi.org/10.1007/BF00587690 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2057 GBV_ILN_4082 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4323 GBV_ILN_4700 AR 25 1990 7 07 3297-3308 |
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10.1007/BF00587690 doi (DE-627)OLC2046169859 (DE-He213)BF00587690-p DE-627 ger DE-627 rakwb eng 670 VZ Ling, Hung C. verfasserin aut Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics 1990 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chapman and Hall Ltd 1990 Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. Compaction Oxalate Yttrium Green Density BaCO3 Enthalten in Journal of materials science Kluwer Academic Publishers, 1966 25(1990), 7 vom: Juli, Seite 3297-3308 (DE-627)129546372 (DE-600)218324-9 (DE-576)014996774 0022-2461 nnns volume:25 year:1990 number:7 month:07 pages:3297-3308 https://doi.org/10.1007/BF00587690 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2057 GBV_ILN_4082 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4323 GBV_ILN_4700 AR 25 1990 7 07 3297-3308 |
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10.1007/BF00587690 doi (DE-627)OLC2046169859 (DE-He213)BF00587690-p DE-627 ger DE-627 rakwb eng 670 VZ Ling, Hung C. verfasserin aut Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics 1990 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chapman and Hall Ltd 1990 Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. Compaction Oxalate Yttrium Green Density BaCO3 Enthalten in Journal of materials science Kluwer Academic Publishers, 1966 25(1990), 7 vom: Juli, Seite 3297-3308 (DE-627)129546372 (DE-600)218324-9 (DE-576)014996774 0022-2461 nnns volume:25 year:1990 number:7 month:07 pages:3297-3308 https://doi.org/10.1007/BF00587690 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2057 GBV_ILN_4082 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4323 GBV_ILN_4700 AR 25 1990 7 07 3297-3308 |
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10.1007/BF00587690 doi (DE-627)OLC2046169859 (DE-He213)BF00587690-p DE-627 ger DE-627 rakwb eng 670 VZ Ling, Hung C. verfasserin aut Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics 1990 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Chapman and Hall Ltd 1990 Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. Compaction Oxalate Yttrium Green Density BaCO3 Enthalten in Journal of materials science Kluwer Academic Publishers, 1966 25(1990), 7 vom: Juli, Seite 3297-3308 (DE-627)129546372 (DE-600)218324-9 (DE-576)014996774 0022-2461 nnns volume:25 year:1990 number:7 month:07 pages:3297-3308 https://doi.org/10.1007/BF00587690 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_20 GBV_ILN_23 GBV_ILN_30 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2057 GBV_ILN_4082 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4316 GBV_ILN_4319 GBV_ILN_4323 GBV_ILN_4700 AR 25 1990 7 07 3297-3308 |
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It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. 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preparation and densification of superconducting $ yba_{2} $$ cu_{3} $$ o_{x} $ ceramics |
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Preparation and densification of superconducting $ YBa_{2} $$ Cu_{3} $$ O_{x} $ ceramics |
| abstract |
Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. © Chapman and Hall Ltd 1990 |
| abstractGer |
Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. © Chapman and Hall Ltd 1990 |
| abstract_unstemmed |
Abstract The solid-state reaction method to form the superconducting oxide $ YBa_{2} $$ Cu_{3} $$ O_{x} $ was studied. It was found that the starting cupric and yttrium components accelerated the decomposition of the $ BaCO_{3} $ component. At a constant heating rate of 10 ° $ Cmin^{−1} $ in thermogravimetric analysis, the temperature of complete decomposition,Tf, was lowered from greater than 1000 ° C in pure $ BaCO_{3} $ to between 915 and 985 ° C. The effectiveness in decreasingTf can be ranked in the order of oxalate, carbonate and oxide. The highest sintered density achieved in this study was 6.03 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 95%) at 990 ° C and 5.85 g $ cm^{−3} $ (ϱ/$ ϱ_{th} $ = 92%) at 960 ° C. The source of cupric ion had the largest effect on densification. The use of cupric carbonate resulted in a consistently high Archimedes density of about 6.$ 00gcm^{−3} $ and large dimensional shrinkage of about 20% at 990 ° C for 12h. In contrast, the use of cupric oxide gave the lowest density and smallest shrinkage. Within the same powder lot, higher sintered density and smaller dimensional shrinkage were observed in samples with higher initial green density and compaction pressure. However, the data suggested that the enhanced densification and higher density achieved by the use of cupric carbonate and oxalate cannot be accounted for by the different physical characteristics of the powders and the mechanics of powder compaction, measured collectively by the green density. © Chapman and Hall Ltd 1990 |
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