铝合金三价铬本色化学氧化快速无损鉴别工艺研究  

Study on rapid and nondestructive identification of colorless trivalent chromium chemical oxidation film on surface of aluminum alloy

作　　者：童子航 刘明 王梅丰[1] 陈东初[3] 钟常庆 王夏妍 王乘风 TONG Zihang;LIU Ming;WANG Meifeng;CHEN Dongchu;ZHONG Changqing;WANG Xiayan;WANG Chengfeng(School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China;Daqing Petrochemical Construction Co.,Ltd.,Daqing 163000,China;School of Science,Foshan University,Foshan 528137,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063 [2]大庆石化建设有限公司,黑龙江大庆163000 [3]佛山科学技术学院材料与氢能学院,广东佛山528137

出　　处：《电镀与涂饰》2023年第9期52-58,共7页Electroplating & Finishing

摘　　要：针对铝合金三价铬本色化学氧化快速鉴别的需求,开发了一种快速无损鉴别工艺。通过正交试验得到了如下较佳的工艺条件:高锰酸钾8.0 g/L,无水碳酸钠1.0 g/L,钼酸钠0.2 g/L,pH 9.0,时间80 s。采用该鉴别工艺时,裸铝合金表面会变为黄色,而经三价铬本色化学氧化处理的铝合金表面无明显变化。该鉴别工艺对三价铬本色化学氧化膜的表面形貌、耐蚀性及漆膜附着力均无明显影响,具有快速、无损的优点。According to the requirement of rapid identification of trivalent chromium colorless chemical oxidation of aluminum alloy,a rapid and nondestructive identification method was developed.The process conditions were optimized by orthogonal test as follows:potassium permanganate 8.0 g/L,anhydrous sodium carbonate 1.0 g/L,sodium molybdate 0.2 g/L,pH 9.0,and time 80 s.The bare aluminum alloy will turn yellow if being treated by the given identification process,while the aluminum alloy coated with trivalent chromium oxidation film has no obvious change.The identification process has no negative impact on the surface morphology and corrosion resistance of colorless trivalent chromium chemical oxidation film and the adhesion of a paint on its surface,featuring the advantages of rapidity and nondestructiveness.

关 键 词：铝合金 三价铬 本色化学氧化 快速无损鉴别 

分 类 号：TQ153.6[化学工程—电化学工业] TG178[金属学及工艺—金属表面处理]