公开(公告)号：US3617345A

公开(公告)日：1971-11-02

申请号：US3617345D

申请日：1969-10-30

Applicant: ALUMINUM CO OF AMERICA

Inventor： BROWN MELVIN H ,  WEI MAURICE W

IPC: C23C2/12 ,  C23C2/30 ,  C23C1/08 ,  C23F17/00

CPC classification number: C23C2/12 ,  C23C2/30

Abstract: A process for coating a ferrous metal article with aluminum including cleaning the ferrous article, applying to the surface of the ferrous article a flux of about 0.125 to 4% aqueous solution of an organic aromatic carboxylic acid having one carboxyl group and a phenolic hydroxyl group, drying the ferrous article and subsequently applying molten aluminum to the ferrous article. The coating process wherein the acid is salicylic acid or 5-chlorosalicylic acid employed in concentrations of about 1 to 4%. Applying the flux to the ferrous metal article surface by immersion of the article in a flux bath having a temperature of about 100 to 212* F. for a period of about 1 to 2 minutes.