Mechanical Properties of TiN Coating on Nanocrystalline Surface Layer of 304 Stainless Steel

被引：1
作者：
Wang ChangpengZhou YiminZhu XiaodongFu TaoMa Shengge State Key Laboratory for Mechanical Behavior of MaterialsXian Jiaotong UniversityXian China Key Laboratory of Biomedical Information Engineering of Ministry of EducationXian Jiaotong UniversityXian China Shenzhen Program Materials Surface Technology RD CenterShenzhen China [1 ,2 ,1 ,1 ,2 ,3 ,1 ,710049 ,2 ,710049 ,3 ,863 ,518029 ]
机构：
来源：
稀有金属材料与工程 | 2012年 / 41(S1)卷 / S1期
关键词：
surface nanocrystallization; stainless steel; hard coating; duplex treatment;
D O I：
暂无
中图分类号：
TG174.44 [金属复层保护];
学科分类号：
080503 ;
摘要：
Surface nanocrystallization(SNC)can markedly improve surface mechanical properties of metallic materials and accelerate thermal diffusion of elemental atoms.In this work we study the effects of SNC on structure and mechanical properties of TiN coating on 304 stainless steel substrate.The steel was subjected to 15 min surface mechanical attrition treatment(SMAT)to obtain a nanocrystalline surface layer with thickness about 30μm.TiN coating was deposited on the surface nanocrystallized and the coarse-grained steel substrates by multi-arc ion plating.X-ray diffraction shows that TiN(111)orientation of the coating is much reduced due to SNC treatment.Mechanical tests show that the nanocrystalline surface layer has obviously increased surface hardness of the coating system;toughness and adhesion of the coating,impact resistance of the coating system are also improved.Advantages of SNC-hard coating processing over the conventional duplex treatment consisting of thermal diffusion process-hard coating are shortly discussed.
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页码：85 / 88
页数：4
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