硬质涂层的微磨粒磨损评价方法  

Evaluation of Wearability through Micro-grain-abrasion Testing for Hard Coating

作　　者：于磊[1,2] 鲍明东[2] 应鹏展[1] 孙海林 何家文[4] 

机构地区：[1]中国矿业大学材料科学与工程学院,江苏徐州221116 [2]宁波工程学院材料研究所,浙江宁波315016 [3]浙江汇锦涂层科技有限公司,浙江临安311305 [4]西安交通大学,陕西西安710049

出　　处：《热处理》2009年第3期29-35,共7页Heat Treatment

摘　　要：微磨粒磨损试验是最近发展起来的评价涂层耐磨性的方法。比较了通过微磨粒磨损试验和球(销)盘磨损试验评价硬质涂层耐磨性的差别,论述了涂层耐磨性评定结果与涂层零件使用性能之间的关系。被测试的涂层为CrN和CrSiN,工件为高速钢钻头。研究结果表明,用微磨粒磨损试验测得的微粒磨损系数(kα)与镀层钻头的钻孔寿命之间存在一定关系,也即当kα小于某一数值时,镀层钻头的钻孔寿命较高。而用球(销)盘磨损试验法测定的比磨损率则与钻头的钻孔寿命无内在联系。The micro-grain-abrasion testing is a method developed recently and used to evaluat coating wearability. The wearability evaluating through the micro-grain-abrasion testing was compared with wearability evaluating through the pin-on-disc abrasion testing for the hard coatings. The relationship between the wearability evalution resuits of coatings and the service performance of parts with coating was diseribed. CrN coating, CrSiN coating and high speed steel drills were measured. The research results show that there is a definite relation between the wear coefficient （k~） and the drilling hole life of drill with coating, that is, when k~ is less than a certain value the drill will provide higher service life, but there is not a inner relation between the specific wear rate measured by using the pin-on-disc abrasion testing and the drilling hole life of drill with coating.

关 键 词：硬质涂层 磨损 比磨损率 微磨粒磨损系数 

分 类 号：TG174.44[金属学及工艺—金属表面处理] TG115.58[金属学及工艺—金属学]