Stability of Si3N4 and Liquid Phase(s) During Sintering

作者: C. Greskovich , S. Prochazka

DOI: 10.1111/J.1151-2916.1981.TB09885.X

关键词: MetallurgyChemical engineeringNitrogenHigh nitrogenSinteringMaterials sciencePartial pressureStability diagramSiliconLiquid phase

摘要: Advanced sintering techniques for consolidation of Si3N4 powders in the presence an oxygen-rich liquid phase(s) require high temperatures and usually nitrogen pressures. A stability diagram is constructed as a function partial pressures (PN2) silicon (PSi). High PN2 (20 to 100 atm) increases phase by reducing PSi PSi0, respectively. The region sinterability outlined submicrometer containing 7 wt% BeSiN2 SiO2 densification aids.

参考文章(6)
M. Mitomo, Pressure sintering of Si3N4 Journal of Materials Science. ,vol. 11, pp. 1103- 1107 ,(1976) , 10.1007/BF02396645
D. R. MESSIER, G. E. GAZZA, Thermal Decomposition of Al2O3‐Si3N4 Mixtures Journal of the American Ceramic Society. ,vol. 58, pp. 538- 538 ,(1975) , 10.1111/J.1151-2916.1975.TB18789.X
C. Greskovich, Hot-pressed β-Si3N4 containing small amounts of Be and O in solid solution Journal of Materials Science. ,vol. 14, pp. 2427- 2438 ,(1979) , 10.1007/BF00737033
M. MITOMO, Y. YAJWIA, N. KURAMOTO, Thermal Decomposition of S1-AI-0-N Ceramics Journal of the American Ceramic Society. ,vol. 62, pp. 316- 317 ,(1979) , 10.1111/J.1151-2916.1979.TB09495.X
H. F. PRIEST, G. L. PRIEST, G. E. GAZZA, Sintering of Si3N4 Under High Nitrogen Pressure Journal of the American Ceramic Society. ,vol. 60, pp. 81- 81 ,(1977) , 10.1111/J.1151-2916.1977.TB16102.X
G. R. Terwilliger, F. F. Lange, Pressureless sintering of Si3N4 Journal of Materials Science. ,vol. 10, pp. 1169- 1174 ,(1975) , 10.1007/BF00541399