摘要
采用浸泡腐蚀方法,研究了化学镀Ni–11%P镀层和纳米/微米ZrO2复合镀层分别在15%HCl、15%NaOH和25%NaCl介质溶液中的耐蚀性能。结果表明,化学镀Ni–11%P镀层具有最好的耐蚀性能,纳米和微米ZrO2粒子的加入会降低镀层的耐蚀性能;化学镀Ni–11%P及其复合镀层在15%NaOH和25%NaCl溶液中的腐蚀失重,远小于在15%HCl溶液中的腐蚀失重。在5%NaCl溶液中的电化学极化结果表明,纳米和微米ZrO2粒子的加入会增加镀层的阳极反应过程,使复合镀层的极化电阻减小,腐蚀电流密度增大。
Electroless Ni-11%P and its composite coatings co-deposited with nano and micro ZrO2 particles were studied by immersion experiments in 15% HCl, 15% NaOH and 25% NaCl solutions. The results showed that the Ni-11%P coating has best corrosion resistance, and the addition of nano and micro ZrO2 particles tends to reduce the coating＇s corrosion resistance. The coating weight loss in 15% NaOH and 25% NaCl solutions is far less than that in 15% HCl solution. The polarization curves in 5% NaCl solution showed that the addition of nano and micro ZrO2 particles can speed up the anodic reaction process, decrease the polarization resistance and enhance the corrosion current density.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2010年第8期24-26,共3页
Electroplating & Finishing
关键词
化学镀
镍-磷复合镀层
二氧化锆粒子
介质溶液
耐蚀性能
electroless plating
nickel-phosphorus composite coating
zirconia particle
medium solution
corrosion resistance
