摘要
应用SEM及断口金相技术对Al/Al_2O_3陶瓷基复合材料的断口形貌进行研究.结果表明:1000℃时.助烧剂的粘-塑性流动机制及粘结作用是实现Al/Al_2O_3陶瓷基复合材料烧结及性能提高的主要原因.Al/Al_2O_3陶瓷基复合材料呈现韧脆断口形貌特征;基体Al_2O_3颗粒发生解理断裂,以解理台阶、河流花样等为主要的断口形貌;金属Al等韧性组织发生撕裂,产生断裂棱,使Al/Al_2O_3陶瓷基复合材料的韧性显著提高.
The fracture of Al/Al2O3 ceramic ma (CMC) was studied using SEM and fractographic technology. The results show:The viscous plastic and sticky affect of sintering aids is the main reason to realize the sintering of Al/Al2O3, CMC and increase .The ductile -britile fracture appears in Al/Al2O3 CMC. The cleavage fracture takes place in the grain of Al2O3 , Clesvage steps and stream flows are its main fractograph. The tear takes place in the ductile structure of metal A The edge is formed,and it causes the tenacity of Al/Al2O3 CMC to be remarkably promoted.
出处
《理化检验（物理分册）》
CAS
1996年第1期22-24,共3页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
陶瓷基
复合材料
断口
解理断裂
铝
Al/Al2O CMC Fractograph Cleavage ure Ductility Sintering
