三价铬硬铬电镀及镀层性能表征  

Trivalent chromium hard chromium plating and coating property characterization

作　　者：李家柱[1] 李艳景 田孝华 邹玲 赵新 万三凤 孙宁 侯蔚 李文刚 

机构地区：[1]北京蓝丽佳美化工科技中心,北京100096 [2]武汉迪赛环保新材料股份有限公司,湖北武汉430074 [3]中国兵器工业新技术推广研究所,北京100089 [4]内蒙第一机械集团有限公司,内蒙古包头014030

出　　处：《电镀与涂饰》2016年第7期362-365,共4页Electroplating & Finishing

摘　　要：采用BSC12型三价铬镀硬铬工作液(含三价铬28 g/L、复合配位剂35 g/L、缓冲剂120 g/L和催化剂20 g/L左右)在45钢和42Cr Mo钢棒材上进行了试验。采用金相显微镜、扫描电镜、能谱仪和显微硬度计考察了镀层的金相结构、微观形貌、元素组成、厚度和显微硬度。结果表明,该工艺镀速可达到1μm/min,所得铬镀层为纯金属铬,厚度可超过60μm,显微硬度900 HV以上。A BSC12-type trivalent hard chromium plating bath composed of Cr（III） 28 g/L, composite complexing agent 35 g/L, buffering agent 120 g/L, and accelerating agent ca.20 g/L was tested on 45 and 42 Cr Mo steel. The metallographic structure, microscopic morphology, elemental composition, thickness and microhardness of the coating were examined by metalloscope, scanning electron microscope, energy-dispersive spectroscope and microhardness tester. The results showed that the process features a chromium deposition rate up to 1 μm/min and is able to produce pure chromium coatings thicker than 60 μm with a microhardness higher than 900 HV.

关 键 词：三价铬电镀 硬铬 厚度 显微硬度 

分 类 号：TQ153.11[化学工程—电化学工业]