溅射沉积铝合金基CrTiAlN涂层的结构、力学以及摩擦学特性  

Structural,mechanical and tribological properties of CrTiAlN coatings on Al alloy deposited by sputtering

作　　者：石永敬[1,2] 潘复生[1] 王维青[1] 杨世才 龙思远[1] 朱光俊[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]重庆科技学院冶金与材料工程学院,重庆401331 [3]Teer Coatings Ltd.,West Stone House,Berry Hill Industrial Estate

出　　处：《中国有色金属学报》2011年第9期2099-2104,共6页The Chinese Journal of Nonferrous Metals

基　　金：重庆市自然科学基金资助项目(CSTC;2010BB4290)

摘　　要：采用反应非平衡磁控溅射技术制备出一系列LY12铝合金基CrTiAlN多层涂层,并通过X射线衍射仪、纳米压痕仪以及多功能摩擦磨损测试仪来研究CrTiAlN涂层的结构、力学以及摩擦学特性。结果表明:CrTiAlN涂层为以TiN0.9和CrN为主要组织取向的FCC结构,N2水平和衬底负偏压对涂层的力学特性和粘附强度有显著的影响。经过优化参数,在衬底偏压?55V和中N2水平条件下,CrTiAlN涂层的结合强度为10 N,显微硬度达到29.87 GPa。A series of CrTiAlN multi-layer coatings on LY12 Al alloy substrates were prepared using unbalanced reactive magnetron sputtering system. The structural, mechanical and tribological properties of coatings were studied by X-ray diffractometry, microhardness tester and multi-functional ball-on-disc tester. The results show that the CrTiAlN coatings belong to FCC structure consisting of TIN0.9 and CrN, and the N2 level and negative bias voltage have a significant effect on CrTiAlN multi-layer coatings. The adhesion strength of optimized CrTiAlN coatings is 10 N at -55 V and medium N2 level, and its microhardness value is about 29.87 GPa.

关 键 词：CrTiAlN涂层 力学性能 结构特性 摩擦因数 

分 类 号：TG174.44[金属学及工艺—金属表面处理]