Moderate temperature manganese phosphate conversion coating comp

Details Moderate temperature manganese phosphate conversion coating comp Moderate temperature manganese phosphate conversion coating comp

1996-02-14

1997-01-21

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148262, C23C 2218

Patent

active

055956114

ABSTRACT:
An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good quality paint undercoating phosphate conversion coating on metal substrates, particularly on steel and galvanized steel substrates, when contacted by spraying or immersion with the substrates at a temperature of 54.degree.-65.degree. C. for a time of 2-5 minutes.

REFERENCES:
patent: 2132000 (1938-10-01), Curten
patent: 3767476 (1973-10-01), Wagner
patent: 4941930 (1990-07-01), Charles
patent: 5045130 (1991-09-01), Gosset
patent: 5261973 (1993-11-01), Sienkowski

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