等离子喷涂建筑用316L表面Al-Cu合金粉末涂层组织及性能分析  

Surface Modificationof 316L Stainless Steel with Plasma Sprayed Coatings of Al-Cu Alloy

作　　者：罗小虎[1] 王刚 Luo Xiaohu;Wang Gang(Department of Architectural Engineering,Chongqing City Vocational College,Chongqing 402160,China;College of Civil and Architectural Engineering,Panzhihua University,Panzhihua 617000,China)

机构地区：[1]重庆城市职业学院建筑工程系,重庆402160 [2]攀枝花学院土木与建筑工程学院,攀枝花617000

出　　处：《真空科学与技术学报》2019年第12期1135-1139,共5页Chinese Journal of Vacuum Science and Technology

摘　　要：选择等离子喷涂工艺在建筑用316L表面上制得Al-Cu涂层、SrAl2O4与SiO2包覆SrAl2O4掺杂Al-Cu涂层,实验测试分析涂层组织结构,力学性能以及涂层摩擦磨损性能。研究结果表明:SrAl2O4掺杂涂层形成凹坑结构,SiO2包覆SrAl2O4掺杂涂层形成致密平整结构。SrAl2O4和SiO2包覆SrAl2O4掺杂涂层形成良好界面。基体具有最低的硬度,按照Al-Cu、SrAl2O4、SiO2包覆SrAl2O4不断出现硬度升高的变化趋势,SrAl2O4掺杂的涂层具有比Al-Cu涂层更高的硬度与结合强度。相对于未掺杂涂层,通过SrAl2O4掺杂与SiO2包覆SrAl2O4掺杂涂层出现摩擦系数略微增大。磨损率最低的是SiO2包覆SrAl2O4掺杂得到的涂层。采用磷光颗粒掺杂后的涂层经过摩擦后形成了更多的磨粒,同时磨痕也更小。The SiO2 films were deposited on SrAl2O4 grains via bottom-up chemical route.The SrAl2O4-doped Al-Cu and SiO2/SrAl2O4-doped alloy coatings were synthesized by plasma spraying of a mixture of Al-Cu alloy powder SrAl2O4 or Si-coated SrAl2O4 dopant powders,respectively,on substrate of 316 L stainless steel,a construction material.The influence of the dopants,including SrAl2O4 and SiO2-covered SrAl2O4 on the tribological properties and interfacial adhesion was investigated with SEM and conventional mechanical probes.The results show that the three types of the Al-Cu coatings all had a major impact on surface modification.When it comes to hardness,wear-resistance and interfacial adhesion,a descending order appeared:SiO2/SrAl2O4-doped Al-Cu >SrAl2O4-doped Al-Cu >Al-Cu >316 L;when it comes to dynamic friction coefficient,an ascending order showed up.Possible mechanisms responsible for the improved tribological behavior were tentatively discussed in a thought provoking way.

关 键 词：等离子喷涂 AL-CU合金 SrAl2O4掺杂 摩擦磨损 

分 类 号：TG178[金属学及工艺—金属表面处理]