公开(公告)号：US3884729A

公开(公告)日：1975-05-20

申请号：US41184673

申请日：1973-11-01

Applicant: BRITISH STEEL CORP

Inventor： JACKSON ALBERT EDWARD ,  WILLIAMS ERNEST WYNNE

IPC: C23C24/08 ,  C23C10/34 ,  C21D ,  B22F7/00

CPC classification number: C23C10/34 ,  Y10T29/49982 ,  Y10T428/12139 ,  Y10T428/12965

Abstract: A method of providing a surface of a steel substrate with an aluminum coating, the said method comprising coating the said surface of the steel substrate with a layer of metal, coating the said metal layer with a layer containing aluminium powder, the aluminium powder forming an alloy with the steel substrate at a predetermined elevated temperature, compacting the said metal and powder layers to the substrate, effecting a cold reduction, and effecting a subsequent annealing heat treatment to make the metal and powder layers adhere tightly to the substrate, and thus provide the substrate with the said aluminium coating, the metal layer serving to control nucleation of the said alloy which is formed at the said predetermined elevated temperature.