石墨烯粒径对Ni-Co-石墨烯复合镀层性能的影响  

Effects of Graphene Particle Size on Properties of Ni-Co-Graphene Composite Coatings

作　　者：魏广宁 高二龙 丁振国 李雪松 Wei Guangning;Gao Erlong;Ding Zhenguo;Li Xuesong(Key Laboratory of Advanced Structural Materials,Ministry of Education,School of Materials Science and Engineering,Changchun University of Technology,Changchun 130012,China;Jihua Liaoyuan Chemical Industry Co.,Ltd,Liaoyuan 136200,China)

机构地区：[1]长春工业大学材料科学与工程学院先进结构材料教育部重点实验室,吉林长春130012 [2]吉化辽源化工有限责任公司,吉林辽源136200

出　　处：《稀有金属材料与工程》2021年第5期1735-1742,共8页Rare Metal Materials and Engineering

基　　金：吉林省科技厅重点科技研发项目(20180201082GX);吉林省产业技术研究与开发专项(2019C046-8)。

摘　　要：为了得到性能优异的复合镀层,在镀液中添加不同粒径的石墨烯,采用复合电沉积技术,制备了Ni-Co-石墨烯复合镀层。表征了镀层的表面形貌、相结构、显微硬度、耐磨性和耐蚀性能,并同Ni-Co合金对比。结果显示,石墨烯很好地嵌入到了镀层中,而且石墨烯的存在并没有改变镀层基质的晶体结构;添加石墨烯提高了复合镀层的显微硬度(HV),最高可达8050 MPa;降低了复合镀层的摩擦系数,在一定程度上减少了粘着磨损的面积;复合镀层的自腐蚀电流密度为1.0905×10^(-5)A/cm^(2),低于Ni-Co合金镀层的自腐蚀电流密度1.8298×10^(-5)A/cm^(2)。石墨烯的添加提高了复合镀层的硬度,耐磨性和耐蚀性。In order to obtain a composite coating with excellent performance,Ni-Co-graphene composite coating was prepared by adding graphene with different particle sizes to the plating solution and using composite electrodeposition technology.The surface morphology,phase structure,microhardness,wear resistance and corrosion resistance of the coating were characterized and compared with the Ni-Co alloy.The results show that graphene is well embedded in the coating,and the presence of graphene does not change the crystal structure of the substrate.The addition of graphene increases the microhardness(HV)of the composite coating up to 8050 MPa.The friction coefficient of composite coating is reduced,and the area of adhesive wear is reduced to some extent.The self-corrosion current density of composite coating is 1.0905×10^(-5)A/cm^(2),which is lower than that of Ni-Co alloy coating 1.8298×10^(-5)A/cm^(2).The addition of graphene improves the hardness,wear resistance and corrosion resistance of composite coatings.

关 键 词：石墨烯 复合电沉积 Ni-Co合金镀层 

分 类 号：TG178.2[金属学及工艺—金属表面处理]