中文摘要：

氮化硅陶瓷具有高强度高硬度、耐磨、损耐腐蚀等优点,是一种综合性能优异的结构材料.气压法烧结氮化硅能够提高烧结温度从而促进氮化硅陶瓷的致密化,而且适于烧制异形件.因此,是一种经济、实用的重要烧结技术.本文论述了氮化硅陶瓷气压烧结的基本原理、工艺要求及烧结过程,在此基础上总结了气压烧结氮化硅陶瓷在陶瓷轴承、航空航天等领域的应用.

英文摘要：

Silicon nitride is an attractive structural material with high strength, high hardness, excellent wear and corrosion resistance. The gas pressure sintering method for silicon nitride ceramics can increase the sintering temperature and thus promote the densification; also it is suitable for the specimens with complicated shapes. Thus, the gas pressing sintering method is an economical and practical method for preparing silicon nitride ceramics. This paper reviewed the fundamental principle and technical procedures of gas pressure sintering. Then, the application of silicon nitride in the bearing, aerospace and other fields was summarized.