硬质合金基体微织构对TiAlN涂层摩擦性能的影响  

Influence of micro-textured cemented carbide substrate on tribological properties of TiAlN coatings

作　　者：冯爱新[1,2] 何叶[2] 杨润[2] 薛伟[1] 曹宇鹏[2] 李峰平[1] 田良[3] 谢华锟[3] 陈云[3] 

机构地区：[1]温州大学机电工程学院,浙江温州325035 [2]江苏大学机械工程学院,江苏镇江212013 [3]成都工具研究所股份有限公司,四川成都610000

出　　处：《材料热处理学报》2015年第9期161-166,共6页Transactions of Materials and Heat Treatment

基　　金：江苏省普通高校研究生科研创新计划项目(CXLX12_0621);国家自然科学基金(51175237;51305050)

摘　　要：采用光纤激光在硬质合金表面进行了激光微织构工艺(不同微凹坑直径、深度及织构密度),利用PVD法对微织构后的硬质合金表面进行TiAlN涂层沉积。在不同速度下(0.02m/s和0.04m/s)进行了摩擦磨损实验,对比分析了不同织构的摩擦系数,利用扫描电镜研究了表面磨损形貌,电子天平测量磨损量,并进行了磨损机理分析。结果表明,基体微织构后涂层表面的摩擦系数比基体无织构的摩擦系数稳定,微织构直径对基体涂层的摩擦磨损性能影响较大。基体微织构后的涂层具有较好的减摩效果。Laser surface micro-texture processing was carried out on the surface of cemented carbide and then the TiAlN coatings were prepared on the micro-textured surface by physical vapor deposition（ PVD）. The wear performance of the coatings was examined by means of wear tests and SEM. The effect of the different micro-textured surface on friction coefficient of the coatings was investigated. The results show that the friction coefficient of the coatings on the micro-textured substrate is more stable than that of the coatings on the substrate without micro-textureing. The diameter of the micro dimples on the substrate has significant effect on the friction and wear properties of the coating.

关 键 词：硬质合金 激光微织构 TIALN涂层 摩擦学性能 

分 类 号：TG135.5[一般工业技术—材料科学与工程]