摘要
采用电沉积方法在中碳钢基底上制备了Ni-W合金镀层.通过正交试验设计方法研究了制备工艺,利用极差分析了各关键因素对合金镀层性能的影响,获得了镀液配方及最佳工艺条件,并通过扫描电子显微镜、X射线衍射仪等分析测试手段,对镀层形貌、成分、结构、硬度等进行了研究.结果表明,影响显微硬度最大的因素为NaI含量,其次是电流密度Dk.制备Ni-W镀层表面未见有明显缺陷,镀层与基体的结合良好,显微硬度Hv0.3为650左右.
Electroplating Ni-W coatings were prepared on medium carbon steel substrate.Preparation tech-nique was studied through orthogonal experiment design method, using poor analysis method to analyze the various factors affecting the performance of alloy coatings, solution formula and optimum process conditions. Composition, microstructures and performance were analyzed by scanning electron microscope, x-ray diffrac-tion, optical microscopy and microhardness tester. The results show that of all the factors affecting the micro-hardness,NaI content is the strongest,and followed by current density. The surface of Ni-W alloy coatings is not found to have obvious flaws and has a good bond with the matrix. The microhardness of the coatings can reach 650 HV.
出处
《有色金属科学与工程》
CAS
2013年第5期28-32,共5页
Nonferrous Metals Science and Engineering
基金
国家高技术研究发展计划(863计划)项目(2012AA061902)
江西省钨与稀土重大科技专项(2010AZD00100)
江西省高等学校科技落地计划项目(KJLD12072)
江西省科技厅资助项目(20122BAB213011
20132BAB216021)
江西省研究生创新专项资金项目(YC2012-S091)
关键词
电沉积
NI-W
合金镀层
显微硬度
镀层结构
ectrodeposition
Ni-W coatings
alloy coatings
microhardness
microstructure
