公开(公告)号：ZA8909398B

公开(公告)日：1990-09-26

申请号：ZA8909398

申请日：1989-12-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GUPTA DINESH K ,  DINESH K GUPTA ,  OLSON WALTER E ,  WALTER E OLSON

IPC: C22C19/00 ,  C23C4/08 ,  C23C10/02 ,  C23C10/48 ,  C23C28/02 ,  C23C ,  C23F ,  C25D ,  F01D

CPC classification number: C23C10/02 ,  C23C10/48 ,  Y10T428/1209 ,  Y10T428/12493 ,  Y10T428/1275 ,  Y10T428/12806 ,  Y10T428/12826 ,  Y10T428/12931 ,  Y10T428/31678

公开(公告)号：ZA899398B

公开(公告)日：1990-09-26

申请号：ZA899398

申请日：1989-12-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： OLSON WALTER E ,  WALTER E OLSON ,  GUPTA DINESH K ,  DINESH K GUPTA

IPC: C22C19/00 ,  C23C4/08 ,  C23C10/02 ,  C23C10/48 ,  C23C28/02 ,  C23C ,  C23F ,  C25D ,  F01D

Abstract: A protective coating system for superalloys is described. The coating is an active element enriched aluminide, and can be formed by aluminizing an overlay coated superalloy, wherein during the aluminizing process, aluminum diffuses completely through the overlay coating and into the substrate. The coating system exhibits desirable oxidation resistance and resistance to thermal fatigue cracking, due to the presence of oxygen active elements in the overlay.