Method for avoiding Sn-Bi alloy pollution on surface of aluminum part

• Main Authors: SUN ZHENLIN, SHI YUYING, WANG ZHONGMING, XIN YUWU, FENG HUIJIAO, ZHAO YAN, XU JIANWU, ZHU WANBAO, ZHANG XU, QU YANLONG, TAO YONGCHAO
• Format: Patent
• Language: English
• Published: 24.02.2016
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS

The invention discloses a method for avoiding Sn-Bi alloy pollution on the surface of an aluminum part, and relates to a method for removing Sn-Bi alloy pollution on the surface of the aluminum part. An anodizing layer without Sn-Bi alloy pollution is regenerated by performing alkali washing, acid p...