Surface treatment chemical and bath for aluminum and its alloy

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

1989-02-15

1991-02-12

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148261, C23C 2236

Patent

active

049921150

ABSTRACT:
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 2.0-4.0.

REFERENCES:
patent: 4148670 (1979-04-01), Kelly
patent: 4264378 (1981-04-01), Oppen et al.
patent: 4470853 (1984-09-01), Das

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