Al_2O_3-ZrO_2-SiC 陶瓷的快速烧结与力学性能

FAST FIRING AND PROPERTIES OF REACTION BONDED Al 2O 3 ZrO 2 SiC COMPOSITES

研究反应结合Ａｌ２Ｏ３－ＺｒＯ２－ＳｉＣ复合陶瓷的快速烧结工艺和力学性能，讨论了反应结合过程及物相变化．快速烧结是抑制晶粒生长，获得均匀、细微、致密结构的有效途径，Ｎｏ．３复合陶瓷在１５５０℃经１０ｍｉｎ的快速烧结，材料的力学性能达到了较好水平，强度５５５ＭＰａ，断裂韧性３．６ＭＰａ·ｍ１／２，维氏硬度１７．１ＧＰａ．

Al 2O 3 ZrO 2 SiC composites were prepared by RBAO technology(Reaction Bonding of Aluminum Oxide).After pressing and reaction bonding,the samples were fast fired under different conditions.The reaction bonding process and fast firing were discussed.The microstructure and mechanical properties of these composites were investigated.