超音速火焰喷涂制备双峰WC-12Co涂层组织性能研究  

Microstructure and Performance Study of Multimodal WC-12Co Coatings Deposited by HVOF Spraying

作　　者：王群[1] 伍细斌[1] 谭兴龙 杨贵彬 唐智华 王孝建[3] 

机构地区：[1]湖南大学材料科学与工程学院 [2]赣州章源钨业新材料有限公司 [3]上海梅山钢铁股份有限公司技术中心

出　　处：《湖南大学学报（自然科学版）》2011年第1期49-52,共4页Journal of Hunan University:Natural Sciences

基　　金：赣州章源钨业新材料有限公司资助项目(2010.2)

摘　　要：采用JP-8000型超音速火焰(HVOF)喷涂设备,在低碳钢基体上制备了双峰WC-12Co涂层,测试了涂层的结合强度、显微硬度、气孔率以及抗磨粒磨损性能.并利用XRD对喷涂粉末及涂层进行了相结构分析,用扫描电子显微镜对喷涂粉末、磨粒磨损后的涂层表面形貌进行了观察.结果表明:在喷涂过程中,仅有很少量的WC粒子发生氧化脱碳,涂层的结合强度和显微硬度高,组织结构致密.相对于316L不锈钢,双峰WC-12Co涂层具有优异的抗磨粒磨损性能.Multimodal WC-12Co coating was deposited on low carbon steel substrate by using JP-8000 HVOF spraying system. The properties of bond strength, microhardness, porosity and abrasive wear of the coating were investigated. The phases of the feedstock powder and the coating were analyzed by XRD. The characterizations of spraying feedstock powder, microstructure and surface micrograph wear surfaces were analyzed by SEM. The results have indicated that the WC does not decompose obviously during spra- ying and the coating exhibits high bond strength, microhardness and compact structure. Compared with the 316L stainless steel, multimodal WC-12Co coating exhibits excellent abrasive wear resistance.

关 键 词：超音速火焰喷涂 涂层 WC-12CO 磨粒磨损 

分 类 号：TG174.442[金属学及工艺—金属表面处理]