新型 Al_2O_3 基陶瓷刀具材料颗粒弥散增韧与晶须增韧的协同作用  

SYNERGISM OF PARTICLE DISPERSION AND WHISKER TOUGHENING FOR ADVANCED CERAMIC TOOL MATERIAL

作　　者：黄传真[1] 李久立[1] 张树生[1] 艾兴[1] 

机构地区：[1]山东工业大学机械工程学院

出　　处：《山东工业大学学报》1998年第2期112-117,共6页

基　　金：国家自然科学基金

摘　　要：研制成功了一种新型陶瓷刀具材料——ＳｉＣ晶须（ＳｉＣｗ）增韧和ＳｉＣ颗粒（ＳｉＣｐ）弥散增韧Ａｌ２Ｏ３陶瓷刀具ＪＸ－２－Ｉ，该材料具有良好的抗弯强度和断裂韧性，同Ａ（Ａｌ２Ｏ３），ＡＰ（Ａｌ２Ｏ３／ＳｉＣｐ）和ＡＷ（Ａｌ２Ｏ３／ＳｉＣｗ）等材料相比较表明，在ＪＸ－２－Ｉ材料中具有明显的增韧叠加效应，详细研究了晶须增韧和颗粒弥散增韧的协同作用，建立了理论模型并进行了实验验证．An advanced composite ceramic tool material JX 2 I,alumina tool material toughened by addition of silicon carbide whisker (SiCw) and strengthened by dispersion of silicon carbide particale (SiCp) has been developed firstly at home and abroad. The material has the advantage of high flexural strength and fracture toughness. Compared with the mechanical properties of A(Al 2O 3), AP(Al 2O 3/SiCp) and AW (Al 2O 3/SiCw), it is confirmed that there is obvious additive effect of toughening in JX 2 I. The synergism of particle dispersion and whisker toughening has been studied and its theoretical model has been built. The experimental verifications show that the theoretical calculation of fracture toughness is well in agreement with the measured one.

关 键 词：陶瓷刀具 断裂韧性 强度 晶须 三氧化二铝基 

分 类 号：TG711[金属学及工艺—刀具与模具]