【摘要】 介绍了β－Ｓｉ３Ｎ４及添加β－Ｓｉ３Ｎ４的α－Ｓｉ３Ｎ４的气氛加压烧结，β－Ｓｉ３Ｎ４在ＧＰＳ中具有不低于α－Ｓｉ３Ｎ４的烧结活性，而且陶瓷显微结构更容易调节。由ＧＰＳβ－Ｓｉ３Ｎ４制备的陶瓷材料晶粒比较均匀，具有较高的力学性能，尤其是高的韦泊模数。添加于α－Ｓｉ３Ｎ４中的β－Ｓｉ３Ｎ４对陶瓷材料显微结构具有明显的调控作用。更多还原

【Abstract】 Gas-pressure sintering of -Si3N4 and Si3N4 with -Si3N4 addition is reviewed.Si3N4 exhibits a sintering ability compatible to Si3N4.Using -Si3N4 as starting powder facilitates the control of the microstructure and the improvement of Si3N4 ceramics.Addition of -Si3N4 into -Si3N4 can manipulate the microstructure of GPS Si3N4.更多还原