螺杆表面超音速喷涂WC-Co耐磨涂层的研究  

Investigation on WC-Co wearable coating on the surface of screw substrate prepared by HVOF spraying

作　　者：唐春阳[1] 陈荣发[1] 沈兆侠[1] 朱瑞[1] 杨锋[1] 苏发山[1] 

机构地区：[1]扬州大学机械工程学院,江苏扬州225009

出　　处：《扬州大学学报（自然科学版）》2008年第1期34-37,共4页Journal of Yangzhou University：Natural Science Edition

基　　金：江苏省精密与微细制造技术重点实验室开放基金资助项目(JSPM200705);江苏省高等学校大学生实践创新训练计划资助项目(463);扬州大学大学生实践创新训练计划资助项目

摘　　要：采用超音速喷涂技术在45#钢螺杆表面制备了钴基碳化钨型合金涂层,利用SEM、XRD和金相等手段分析了涂层的组织和性能.结果表明:在45#钢基体和涂层的界面区域,WC-Co涂层主要由细小的WC相、块状含铁相和分布均匀的钴相组成;在WC-Co/45#钢界面层中,块状含铁相是α-Fe和马氏体组织;涂层的拉伸结合强度达到65 MPa,显微硬度达到1 200 HV.The WC-Co coating on the surface of 45^# steel screw substrate was prepared by high velocity oxygen fuel spraying. The microstructure and properties of the coating were evaluated by SEM,XRD and so on after spraying. The results revealed that the WC-Co coating was made up of small WC phase, block Fe phase and even-distribution Co phase. In the interface, there were lots of α-Fe and matensite phases, which were formed from austenite cooling down. The shearing strength and rigidity of the coating were 65 MPa and 1 200 HV respectively.

关 键 词：45^#钢螺杆 钴基WC涂层 超音速喷涂 

分 类 号：TG174.44[金属学及工艺—金属表面处理]