Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC
The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (...
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| Autor*in: |
Feng, Pei Zhong [verfasserIn] |
|---|
| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
s.l. Stafa-Zurich, Switzerland: 2007 |
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| Anmerkung: |
https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 |
|---|---|
| Umfang: |
Online-Ressource (4 pages) |
| Reproduktion: |
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 |
|---|---|
| Übergeordnetes Werk: |
In: Materials science forum - Uetikon : Trans Tech Publ., 1984, Vol. 534-536 (Jan. 2007), p. 1289-1292 |
| Übergeordnetes Werk: |
volume:534-536 ; year:2007 ; pages:1289-1292 |
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10.4028/www.scientific.net/MSF.534-536.1289 |
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| 520 | |a The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation | ||
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10.4028/www.scientific.net/MSF.534-536.1289 doi (DE-627)NLEJ238030733 DE-627 ger DE-627 rakwb eng Feng, Pei Zhong verfasserin aut Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (4 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Qu, Xuan Hui oth Wang, Xiao Hong oth Farid, Akthar oth In Materials science forum Uetikon : Trans Tech Publ., 1984 Vol. 534-536 (Jan. 2007), p. 1289-1292 Online-Ressource (DE-627)NLEJ237794969 (DE-600)2047372-2 1662-9752 nnns volume:534-536 year:2007 pages:1289-1292 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 534-536 2007 1289-1292 Vol. 534-536 (Jan. 2007), p. 1289-1292 |
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10.4028/www.scientific.net/MSF.534-536.1289 doi (DE-627)NLEJ238030733 DE-627 ger DE-627 rakwb eng Feng, Pei Zhong verfasserin aut Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (4 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Qu, Xuan Hui oth Wang, Xiao Hong oth Farid, Akthar oth In Materials science forum Uetikon : Trans Tech Publ., 1984 Vol. 534-536 (Jan. 2007), p. 1289-1292 Online-Ressource (DE-627)NLEJ237794969 (DE-600)2047372-2 1662-9752 nnns volume:534-536 year:2007 pages:1289-1292 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 534-536 2007 1289-1292 Vol. 534-536 (Jan. 2007), p. 1289-1292 |
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10.4028/www.scientific.net/MSF.534-536.1289 doi (DE-627)NLEJ238030733 DE-627 ger DE-627 rakwb eng Feng, Pei Zhong verfasserin aut Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (4 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Qu, Xuan Hui oth Wang, Xiao Hong oth Farid, Akthar oth In Materials science forum Uetikon : Trans Tech Publ., 1984 Vol. 534-536 (Jan. 2007), p. 1289-1292 Online-Ressource (DE-627)NLEJ237794969 (DE-600)2047372-2 1662-9752 nnns volume:534-536 year:2007 pages:1289-1292 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 534-536 2007 1289-1292 Vol. 534-536 (Jan. 2007), p. 1289-1292 |
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10.4028/www.scientific.net/MSF.534-536.1289 doi (DE-627)NLEJ238030733 DE-627 ger DE-627 rakwb eng Feng, Pei Zhong verfasserin aut Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (4 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Qu, Xuan Hui oth Wang, Xiao Hong oth Farid, Akthar oth In Materials science forum Uetikon : Trans Tech Publ., 1984 Vol. 534-536 (Jan. 2007), p. 1289-1292 Online-Ressource (DE-627)NLEJ237794969 (DE-600)2047372-2 1662-9752 nnns volume:534-536 year:2007 pages:1289-1292 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 534-536 2007 1289-1292 Vol. 534-536 (Jan. 2007), p. 1289-1292 |
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10.4028/www.scientific.net/MSF.534-536.1289 doi (DE-627)NLEJ238030733 DE-627 ger DE-627 rakwb eng Feng, Pei Zhong verfasserin aut Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (4 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Qu, Xuan Hui oth Wang, Xiao Hong oth Farid, Akthar oth In Materials science forum Uetikon : Trans Tech Publ., 1984 Vol. 534-536 (Jan. 2007), p. 1289-1292 Online-Ressource (DE-627)NLEJ237794969 (DE-600)2047372-2 1662-9752 nnns volume:534-536 year:2007 pages:1289-1292 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/MSF.534-536.1289 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 534-536 2007 1289-1292 Vol. 534-536 (Jan. 2007), p. 1289-1292 |
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| title_sort |
study on oxidation behavior of (w,mo)si<sub>2</sub> powders in air at 400, 500 and 600ºc |
| title_auth |
Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC |
| abstract |
The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 |
| abstractGer |
The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 |
| abstract_unstemmed |
The oxidation of (W,Mo)Si2 powders has been examined at 400, 500 and 600ºC for 12.0hours in air. It was shown that the low temperature oxidation resistance of (W,Mo)Si2 was worsethan that of MoSi2, and they showed great changes in mass, volume and colour. At 500ºC, theamount of volume expansion of (W,Mo)Si2 was as high as about 7~8 times and color changed fromblack to yellow after 4.0h with MoO3, WO3, (W,Mo)O3 and amorphous SiO2 as main reactionproducts. It took about 8.0h to obtain the same results for MoSi2. The mass gain and oxidation ratewere relatively slower at 400ºC and 600ºC than that at 500ºC. These were probably due to the loweroxidation rate at 400ºC and the protective silica glass on surface of powders formed from thevolatilization of MoO3, WO3 and (W,Mo)O3 at 600ºC, which would restrain the diffusion ofmolybdenum from matrix to exterior and oxygen from outside to inside and the further acceleratedoxidation https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1289 |
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| title_short |
Study on Oxidation Behavior of (W,Mo)Si<sub>2</sub> Powders in Air at 400, 500 and 600ºC |
| url |
https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/MSF.534-536.1289 https://doi.org//10.4028/www.scientific.net/MSF.534-536.1289 |
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Qu, Xuan Hui Wang, Xiao Hong Farid, Akthar |
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