摘要
以热压Ｍｕｌｉｔｅ／ＺｒＯ２／ＳｉＣｐ材料为对象，研究不同后期热处理制度对陶瓷复合材料机械加工损伤的影响，结果显示：适当的后期热处理有效地愈合因机械加工引进的材料表面／亚表面裂纹，提高材料的力学性能；对裂纹的愈合机理进行了探讨，认为在本文实验的条件下，主要有玻璃相愈合及氧化钝化裂纹两种方式；后期热处理同时消除或部分消除了机加工表面残余应力。
he influence of final heat treatment on the machining damages of ceramic composite was studied with Mullite/ZrO 2/SiCp ceramics.Results showed:the proper final heat treatment healed or blunted the surface/subsurface cracks induced by machining effectively,and improved the mechanical properties of machined materials;the healing mechanics of cracks was discussed,the cracks healing by glass phase and oxidative blunting were thought to be the main mechanics under the experimental condition;final heat treatment relieved or part relieved the machining surface residual stresses.
出处
《中国陶瓷》
CAS
CSCD
北大核心
1998年第3期14-17,共4页
China Ceramics
关键词
热处理
机械加工
裂纹
残余应力
陶瓷复合材料
Final heat treatment\ Machining\ Healing\ Cracks\ Surface residual stresses
