巴基管涂层在45^#钢表面激光熔覆的研究  

Study on Laser Cladding of 45￣# Carbon Steel with Buckytube Coating

作　　者：魏秉庆[1] 刘文今[1] 梁吉[1] 高志栋[1] 张继红[1] 吴德海[1] 

机构地区：[1]清华大学机械工程系

出　　处：《中国激光》1996年第8期765-768,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金;清华大学青年科学研究基金

摘　　要：采用激光熔覆技术并通过后续淬火处理对以４５＃钢为基体的巴基管涂层进行改性，测试了表面的宏观硬度，并用ＳＥＭ，ＴＥＭ对处理的表面组织进行检测和分析，实验结果表明，改性后的巴基管涂层使４５＃钢的表面性能得到明显的提高。在优化的工艺参数下，其表面宏观硬度平均可达ＨＲＣ６５．同时，表面耐腐蚀性也明显改善。组织观察发现在马氏体基体上弥散着大量形状规则的０．１μｍ量级的多边形晶体，另外，还观察到极耐腐蚀的白束针相。carbon sterl with a buckytube coating was modified by laser cladding and a consequent heat treatment. Rockwell hardness and the structure of the sample surface were examined with SEM and TEM. The results indicate that the surface properties of 45# carbon steel with buckytube coating are improved remarkably after medification. The average macro-hardness of the surface with optimal parameters is HRC65. At the same time, the corresion-resistance is also improved obviously.A new structure corrosion-resistant carbide as well as a great deal of polygonal crystallites which were of the order of 10-1 micron and dispersed in a martensite matrix were observed.

关 键 词：巴基管 激光熔覆 涂层 45^#钢 钢 

分 类 号：TG174.44[金属学及工艺—金属表面处理]