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.
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.
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