不同沉积方式对Ni-W/SiC复合镀层组织及摩擦性能的影响  

Effects of different deposition methods on microstructure and friction properties of Ni-W/SiC composite coatings

作　　者：杨忠国[1] 付欣悦 衣淑娟[2] 王石 李强[3] 郭胜杰[1] YANG Zhongguo;FU Xinyue;YI Shujuan;WANG Shi;LI Qiang;GUO Shengjie(College of Civil Engineering and Water Conservancy, HeilongjiangBayi Agricultural University,Daqing 163319, China;College of Engineering, HeilongjiangBayi Agricultural University, Daqing 163319, China;College of Mechanical Engineering, Tianjin University, Tianjin 300072, China)

机构地区：[1]黑龙江八一农垦大学土木水利学院,黑龙江大庆163319 [2]黑龙江八一农垦大学工程学院,黑龙江大庆163319 [3]天津大学机械工程学院,天津300072

出　　处：《功能材料》2022年第6期6205-6211,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51974089);黑龙江省博士后资助金项目(TDJH201803);黑龙江八一农垦大学三横三纵支持计划项目(TDJH201803,TDJH202005)。

摘　　要：为提升Ni-W/SiC复合镀层表面性能,利用电沉积技术在304不锈钢表面制得Ni-W/SiC复合镀层,对比分析脉冲电沉积法、喷射电沉积法和超声-喷射电沉积法3种不同沉积方式对镀层组织与性能的影响。采用扫描电镜(SEM)、能谱仪(EDS)、和原子力显微镜(AFM)观察镀层表面形貌并分析表面粗糙度及元素组成,通过X射线衍射仪(XRD)分析镀层的物相组成并计算晶粒尺寸。利用显微硬度计和摩擦磨损试验机对镀层进行显微硬度和摩擦性能研究。结果表明,按照脉冲、喷射和超声-喷射电沉积的顺序,Ni-W/SiC复合镀层的孔隙率、粗糙度、晶粒尺寸、磨损量、摩擦系数依次降低,而镀层平整度和显微硬度依次增加。超声-喷射电沉积Ni-W/SiC复合镀层显微硬度为626.3 HV,其磨损失重为1.1 g。相较于脉冲电沉积和喷射电沉积Ni-W/SiC复合镀层,超声-喷射电沉积Ni-W/SiC复合镀层磨痕深度更浅,磨痕轨迹更宽,展显出更好的耐磨损性能。Aiming to improve the surface properties of Ni-W/SiC composite coatings,the Ni-W/SiC composite coatings were prepared on 304 stainless steel by electrodeposition technology.The effects of pulse electrodeposition,jet electrodeposition and ultrasonic-jet electrodeposition on the microstructure and properties of the coatings were compared and analyzed.The surface morphology,surface roughness and element composition of the coatings were investigated by scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and atomic force microscope(AFM).The phase composition and the grain size of coatings were researched by X-ray diffraction(XRD).The microhardness and friction properties of the coating were studied by microhardness tester and friction and wear tester.The results show that the porosity,roughness,grain size,wear and friction coefficient of Ni-W/SiC composite coatings decrease in turn,while the flatness and microhardness of the coatings increase in turn according to the order of pulse,jet and ultrasonic jet electrodeposition.The microhardness of Ni-W/SiC composite coatings prepared by ultrasonic-jet electrodeposition is 626.3 HV and the weight loss is 1.1 g.Compared with pulse and jet electrodeposited Ni-W/SiC composite coatings,the depth of wear mark of ultrasonic-jet electrodeposited Ni-W/SiC composite coating is shallower and the wear mark track is wider,which shows the excellent wear resistance.

关 键 词：沉积方式 Ni-W/SiC复合涂层 微观组织 摩擦性能 

分 类 号：TH117.1[机械工程—机械设计及理论]