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摘要: 研究了经过两种不同压力15.7 GPa和25.6 GPa的冲击波活化的Si3N4粉末的表观和显微特性及其烧结特性。结果表明冲击波活化在烧结过程中有明显的增进密实化进程的作用。Abstract: In this paper, we have studied the surface and microscopic features of the silicon nitride powders, which have been activated by shock waves in two pressures: 15.7 GPa and 25.6 GPa, and the sintering features of the ceramics sintered from the activated powders. The results show that the shock-activation plays an apparent role on promoting densification of the powders during sintering.
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Key words:
- shock activation /
- silicon nitride /
- dislocation
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Graham R A, Sawaoka A B. High Pressure Explosive Processing of Ceramics. Switzerland: Trans Tech Publications, 1987. 韩巍. 氮化铝粉体的冲击波活化烧结. 长沙: 国防科技大学, 1996. 周和平. 硅酸盐学报, 1980, 8(4): 414. Hisako Hirai, Ken-ichi Kondo. J Am Ceram Soc, 1994, 77(2): 487-492.
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