金属基体激光熔覆陶瓷基复合涂层的裂纹成因及控制方法  

Crack Formation Mechanism and Controlling Methods of Laser Clad Ceramic Matrix Composite Coatings on Metal Substrate

作　　者：刘海青[1] 刘秀波[1] 孟祥军[1] 郑晨[1] 孙承峰[1] 王明娣[1] 齐龙浩[2] 

机构地区：[1]苏州大学机电工程学院,苏州215021 [2]清华大学新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《材料导报》2013年第11期60-63,共4页Materials Reports

基　　金：国家自然科学基金(51205266);江苏省自然科学基金(BK2010267);苏州市科技计划项目(SYG201233;SG201273);江苏省高校自然科学基金(11KJB460008)

摘　　要：参考了较多国内外有关文献,较为系统地分析了金属基体激光熔覆陶瓷基复合涂层裂纹的形成机理,总结出降低裂纹倾向的方法:选择合适的激光熔覆参数;激光熔覆时对金属基体进行预热或后热处理;采用添加中间过渡层或梯度涂层的方法;在金属基体激光熔覆陶瓷基复合材料中添加增韧、增塑元素。这些方法为控制金属基体激光熔覆陶瓷基复合涂层的裂纹形成提供了有益参考。The systematical analysis is conducted on the crack formation mechanism of laser clad ceramic matrix composite coating on metal substrate based on lots of national and international references, some methods for decreasing crack tendency, including adopting appropriate laser cladding parameters, employing preheat or heat treatment for the substrate by laser cladding, adding intermediate coating or flexibilizer and plasticized element to the ceramic matrix composite materials, are summarized. These methods can provide beneficial reference for controlling the crack formation in the process of laser cladding ceramic matrix composite coating on metal substrate.

关 键 词：激光熔覆 金属基体 陶瓷基复合涂层 裂纹 控制 

分 类 号：TN249[电子电信—物理电子学] TG174.44[金属学及工艺—金属表面处理]