门窗五金件镀层腐蚀失效分析和解决  

Reason analysis on failure of coating on door and window hardware caused by corrosion and countermeasures

作　　者：刘志昌 李洋洋 王义 常苏捷 石磊[2] 王雪[2] 林浩 田雨 LIU Zhichang;LI Yangyang;WANG Yi;CHANG Sujie;SHI Lei;WANG Xue;LIN Hao;TIAN Yu(Asahelai Guoqiang(Shandong)Hardware Technology Co.,Ltd.,Leling 253600,China;Shandong Jianzhu University,Ji’nan 205101,China;Guangrun Metal Products Co.,Ltd.,Weihai 264400,China)

机构地区：[1]亚萨合莱国强(山东)五金科技有限公司,山东乐陵253600 [2]山东建筑大学,山东济南250101 [3]广润金属制品有限公司,山东威海264400

出　　处：《电镀与涂饰》2022年第4期234-237,共4页Electroplating & Finishing

基　　金：山东省自然科学基金联合基金项目(ZR2019LLZ002);山东省自然科学基金(ZR202108100033)。

摘　　要：针对某门窗五金组合件表面镀层达不到中性盐雾试验要求的问题,通过分析故障特征和试验验证,得出主要原因为镀Zn-Fe合金的锌合金固定座与镀Zn-Ni合金的Q235钢铆接件之间发生了电偶腐蚀,提出改用1Cr17钢制作铆接件以及电镀后用苯并三氮唑封闭的解决措施。The characteristics of the failure of coatings on the surfaces of an assembled door and window hardware in neutral salt spray test were analyzed.The primary reason was found to be the galvanic corrosion between the Zn alloy fixed base coated with Zn–Fe alloy and the Q235 steel rivet part coated with Zn–Ni alloy and verified experimentally.Two countermeasures were given:(a)make the rivet part with 1Cr7 steel;and(b)seal the electroplated coatings with benzotriazole.

关 键 词：门窗五金件 失效 锌−镍合金 锌−铁合金 电偶腐蚀 故障解决 

分 类 号：TQ153.2[化学工程—电化学工业]