ZL104铝合金深灰色化学氧化工艺  

Dark grey chemical oxidation process for ZL104 aluminum alloy

作　　者：黄鑫 袁景追 杨旭江 彭叔森 HUANG Xin;YUAN Jingzhui;YANG Xujiang;PENG Shusen(AECC Guizhou Honglin Aero Engine Control Technology Co.,Ltd.,Guiyang 550009,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]中国航发贵州红林航空动力控制科技有限公司,贵州贵阳550009 [2]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《电镀与涂饰》2022年第21期1535-1539,共5页Electroplating & Finishing

摘　　要：研究了温度、处理时间,以及着色剂的种类和浓度对ZL104铝合金在磷酸-铬酸体系溶液中化学氧化后外观和耐蚀性的影响。先采用含4 mmol/L Ag^(+)的磷酸-铬酸化学氧化液处理10 min,再采用未添加Ag^(+)的磷酸-铬酸化学氧化液处理10 min,所得膜层呈深灰色,与铬酸阳极氧化膜的颜色非常接近,并且耐蚀性良好(耐点滴腐蚀时间长达247 s),满足ZL104铝合金铬酸阳极氧化膜局部破损修复的要求。ZL104 cast aluminum alloy was chemically oxidized in a phosphoric-chromic acid solution.The effects of temperature,treatment time,as well as type and concentration of coloring agent on the appearance and corrosion resistance of oxide film were studied.The oxide film prepared in a phosphoric-chromic acid solution with 4 mmol/L of Ag^(+)for 10 min followed by in the one without Ag^(+)for 10 min was dark gray,which was similar to the oxide film formed by anodization in chromic acid,and it featured excellent corrosion resistance as shown by a duration time to dropping corrosion up to 247 s,meeting the requirements of repairing the locally worn chromic acid anodizing film on ZL104 aluminum alloy surface.

关 键 词：铸造铝合金 化学氧化 深灰色 耐蚀性 阳极氧化膜 局部修复 

分 类 号：TG178[金属学及工艺—金属表面处理]