铝-硅合金酸性浸锌  

Acid Zinc Immersion on Aluminum-Silicon Alloy

作　　者：黄晓梅 赵发强 朱俊生 HUANG Xiaomei;ZHAO Faqiang;ZHU Junsheng(Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院超轻材料与表面技术教育部重点实验室,黑龙江哈尔滨150001

出　　处：《电镀与环保》2018年第5期40-44,共5页Electroplating & Pollution Control

摘　　要：通过交流阻抗测试对铝-硅合金酸性浸锌配方进行了优选。对比了铝-硅合金基体、酸性浸锌层、浸锌后电镀镍层、浸锌后化学镀镍层的极化曲线及交流阻抗图谱,并分析了酸性浸锌层的微观形貌及组成。结果表明:酸性浸锌层可作为铝-硅合金电镀镍层及化学镀镍层的良好底层,从而提高铝-硅合金基体的耐蚀性。酸性浸锌层的晶粒呈球状,致密、均匀,主要成分为氟、锌、氧。The formula of acid zinc immersion on aluminum silicon alloy was optimized by AC impedance spectroscopy. The polarization curves and AC impedance spectroscopy of aluminum silicon alloy substrate, acid zinc immersion coating, electroplated nickel coating after immersion of zinc and electroless nickel coating after immersion of zinc were investigated, and the micro morphology and components of acid zinc immersion coating were analyzed. Results showed that acid zinc immersion coating can be used as a good bottom coating of electroplated nickel coating and electroless nickel coating so as to improve the corrosion resistance of aluminum silicon alloy substrate. The acid zinc immersion coating shows compact structure featuring globular and uniform grains, and consists of fluorine, zinc and oxygen.

关 键 词：铝-硅合金 酸性浸锌 交流阻抗 极化曲线 微观形貌 

分 类 号：TG146[一般工业技术—材料科学与工程]