Platinum group silicide modified aluminide coated metal superall

Details Platinum group silicide modified aluminide coated metal superall Platinum group silicide modified aluminide coated metal superall

1995-07-12

1997-11-18

Utech, Benjamin

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428668, 428670, B32B 1500

Patent

active

056886071

ABSTRACT:
Coated nickel, cobalt or nickel-cobalt superalloy bodies having increased resistance to oxidation, corrosion and thermal fatigue at high temperature are produced by applying a thin layer of a platinum-group metal, siliciding and heating to an elevated temperature to diffuse and integrate the silicided platinum-group metal into the surface of the superalloy body. Then the superalloy body is exposed to a diffusion powder composition containing sources of aluminum or aluminum/chromium metals and heated in a hydrogen or inert gas atmosphere to an elevated temperature to codeposit and diffuse aluminum or aluminum and chromium into the silicided platinum-group metal-treated surface layer. Finally, the superalloy body is heated to its solvus temperature to form a ductile protective surface layer having an outer zone comprising a platinum-group metal aluminide, ductilized by the solutioning therein of beta chromium, and an inner stabilizing zone of silicided platinum group metal comprising from 3% to 20% by weight of silicon.

REFERENCES:
patent: 3677789 (1972-07-01), Bungardt et al.
patent: 3785854 (1974-01-01), Baldi
patent: 4528215 (1985-07-01), Baldi et al.
patent: 5057196 (1991-10-01), Creech et al.
patent: 5334263 (1994-08-01), Schaeffer
patent: 5482578 (1996-01-01), Rose et al.

Affiliated with

Also associated with

Rating

Platinum group silicide modified aluminide coated metal superall does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Platinum group silicide modified aluminide coated metal superall, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Platinum group silicide modified aluminide coated metal superall will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1564391