湖南大学学报（自然科学版）2018，Vol.45Issue(6)：90-96,7.DOI:10.16339／j.cnki.hdxbzkb.2018.06.014
HVOF制备的Ni60/WC-10Co4Cr涂层组织和滑动磨损性能研究*
Study on Microstructure and Sliding Wear Performance of Ni60/WC-10Co4Cr Coatings Prepared by HVOF Process
摘要
Abstract
In order to decrease the material and manufactural cost of the HVOF sprayed cermet coat-ing,to replace the EHC in wider fields,five cermet composite coatings were deposited by HVOF process using the blended Ni60 and WC-10Co4Cr powders with different ratios.Microstructure,properties and sliding wear performance of the Ni60/WC-10Co4Cr coatings as well as electrolytic hard chrome(EHC)coating were investigated.The results showed that all the HVOF sprayed coatings were compact(porosi-ties were less than 1％),their hardness increased from 688.3HV0.3 to 1203.4 HV0.3 and the wear rate de-creased from 2.75×10-5mm3/N·m to 7.29×10-7mm3/N·m with increasing the WC-10Co4Cr ratio.The wear rates of the HVOF sprayed coatings and their counterparts as well as their frictional coefficient were lower in comparison to the EHC coating,which exhibited excellent sliding wear performance.关键词
超音速火焰喷涂/金属陶瓷涂层/滑动磨损Key words
HVOF thermal spraying/cermet composite coating/sliding wear分类
矿业与冶金引用本文复制引用
王群,周小峰,陈金雄,谭兴龙..HVOF制备的Ni60/WC-10Co4Cr涂层组织和滑动磨损性能研究*[J].湖南大学学报（自然科学版）,2018,45(6):90-96,7.基金项目
湖南省科学计划项目(2013WK3027),The Hunan Province Science and Technology Plan Project (2013WK3027) （2013WK3027）
