Journal of Inorganic Materials

• Research Paper •     Next Articles

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

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