Electric Conductive Si3N4/TiN Composite Ceramic Manufactured by Liquid-Qhase Sintering
Si3N4/TiN electric conductive ceramic was fabricated by liquid phase sintering using La2O3-AIN as sintering aid and TiN as conductive additives.The Si3N4 powder used was synthesized by SHS (self-propagation high-temperature synthesis) method.Mechanical property and electrical conductivity of the sintered samples with >96% density were studied.Microstructure and phase composition were analyzed by SEM and XRD respectively.The results show that the liquid phase plays role in densification.The ceramic contains two major phases of β-Sialon and TiN.β-Sialon grains show elongated and the conductive phase TiN granules form electric conductive network.This composite Si3N4/TiN has good mechanical properties and its electric resistivity is below 1 Ω·cm.
Si3N4 based ceramics TiN conductive phase electric resistivity
Yong Jiang Laner Wu Zhenkun Huang
School of Materials Science and Engineering,Beifang University of Nationalities,Wenchangbei Road,Yinchuan 750021,China
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
832-836
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）