Surface treatment chemical and bath for aluminium and its alloy

Details Surface treatment chemical and bath for aluminium and its alloy Surface treatment chemical and bath for aluminium and its alloy

C - Chemistry, Metallurgy

23

C

148/17

C23C 22/36 (2006.01) C23C 22/44 (2006.01)

Patent

CA 1333043

A surface treatment chemical for aluminum or its alloy comprising 10-1000 parts by weight of vanadium or cerium ion, 10-500 parts by weight of zirconium ion, 10-500 parts by weight of phosphate ion and 1-50 parts by weight of effective fluorine ion. A surface treatment bath for aluminum or its alloy comprising 10-1000 ppm of vanadium or cerium ion, 10-500 ppm of zirconium ion, 10-500 ppm of phosphate ion and 1-50 ppm of effective fluorine ion, and having pH of 2.0-4Ø

591030

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