摘要
为研究涂层沉积方式对金属陶瓷和硬质合金性能的影响,采用粉末冶金技术制备了Ti(C,N)基金属陶瓷和YT15硬质合金,在基体表面先后采用CVD和PVD制备涂层。采用SEM、EDS等手段对涂层的微观组织和元素含量进行分析,并对涂层试样进行划痕、摩擦因数、切削性能检测。结果表明,通过复合CVD+PVD工艺,CVD涂层和PVD涂层结合良好。不论是金属陶瓷还是硬质合金,CVD涂层的膜基结合力和摩擦因数均为最大,PVD涂层最小,复合CVD+PVD涂层介于两者之间。对于金属陶瓷和硬质合金而言,复合CVD+PVD涂层的切削性能最好,CVD涂层最差,PVD涂层介于两者之间。切削过程中的磨损机理主要是氧化磨损和磨粒磨损。
In order to study the effect of coating deposition on cermets and cemented carbides properties,Ti(C,N)-based cermets and YT15 cemented carbides were prepared by powder metallurgy technique,and then coated by CVD and PVD.The microstructure and elemental contents of the coatings were analyzed by SEM and EDS.The scratches,friction coefficient and cutting performance of the coatings were tested.The results show that the CVD coatings and PVD coatings are well bonded by the combined CVD+PVD technologies.For both the cermets or cemented carbides substrate,both the adhesion force and friction coefficient are the highest for the CVD coatings,while lowest for the PVD coatings,and moderate for the combined CVD+PVD coatings.As to the substrate cermets and cemented carbides,the cutting performance is the best for the combined CVD+PVD coatings,while is worst for the CVD coatings,and moderate for the PVD coatings.The wear mechanism during cutting is mainly oxidative and abrasive wear.
作者
孙磊
熊计
杨天恩
SUN Lei;XIONG Ji;YANG Tianen(College of Mechanical Engineering,Sichuan University,Chengdu 610065,China)
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2019年第6期45-55,共11页
China Surface Engineering
基金
国家自然科学基金(51634006)。
关键词
CVD+PVD涂层
结合力
摩擦因数
切削性能
CVD+PVD coatings
adhesion force
friction coefficient
cutting performance
作者简介
通信作者:熊计(1965-),男(汉),教授,博士,研究方向:粉末冶金及硬质合金与金属陶瓷刀具,E-mail:xji6789@sina.com。
