无机材料学报

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自韧化氮化硅陶瓷的研究与进展

赵振波; 于晓东; 梁胜德; 倪国年   

  1. 北京理工大学机械工程学院精细陶瓷研究室;北京 100081

  • 收稿日期:1995-10-24 修回日期:1995-12-08 出版日期:1997-02-20 网络出版日期:1997-02-20

Progress and Research on Self-Toughening Si3N4 Ceramics

ZHAO Zhienbo; YU Xiaodong; LIANG Shengde; NI Guonian   

  1. Lab. of Fine Ceramics; College of Mech. Engr. Beijing Institutc of Technology Beijing 1OOO81 China

  • Received:1995-10-24 Revised:1995-12-08 Published:1997-02-20 Online:1997-02-20

摘要:

本文阐述了近年来自韧化Si3N4陶瓷技术的研究情况,对自韧化Si3N4的生长机理、影响柱状Si3N4生长的各种因素,以及自韧化Si3N4的断裂韧性、强度、韦伯模教、R曲线行为、疲劳行为、蠕变行为、氧化行为、抗热震性和热导做了全面的分析与说明,提出增韧的技术关健是控制柱状Si3N4的尺寸与玻璃相的合理运用.

关键词: 自韧化Si3N4, 显微组织, 性能, 柱状晶粒

Abstract: Recent anvanceincnts of research on Self-Toughening Si3N4 ceramics were reviewed. The growth nleclla1nsin and all kinds of effect factors on Self-Toughening Si3N4 ceramics, as well as mechanical and physical properties, snch as the fracture toughness, strength, Weiball modulus, R-curve behavior, fatigue behavior, creepbehavior, oxidation behavior, thermal shock resistance, thermal conductivity were discusscd and analyzed. The key technologies of toughening for Self-Toughening Si3N4 ceramics are the control of the size of elougated Si3N4 grains and the proper choice of galss phase.

Key words: Self-Toughening Si3N4, microstructure, properties, elongated grains