Process of phosphating an iron substrate in a closed system usin

Details Process of phosphating an iron substrate in a closed system usin Process of phosphating an iron substrate in a closed system usin

1978-05-10

1980-01-01

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 617, C23F 710

Patent

active

041815394

ABSTRACT:
A process for iron phosphating the surface of an iron substrate which comprises treating said surface with a phosphating solution comprising at least one of alkali metal and ammonium phosphates and at least one of aromatic nitro compounds as a phosphating accelerator in an aqueous medium and having a pH of about 3 to 6.5 in a closed system phosphating installation.

REFERENCES:
patent: 2657156 (1953-10-01), Hyams et al.
patent: 3272664 (1966-09-01), Schlossberg et al.
patent: 3906895 (1975-09-01), Morino et al.
patent: 4017335 (1977-04-01), Maloney

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