Platinum group silicide modified aluminide coating process and p

Details Platinum group silicide modified aluminide coating process and p Platinum group silicide modified aluminide coating process and p

1995-02-03

1996-02-20

Utech, Benjamin

Coating processes

Coating by vapor, gas, or smoke

Metal coating

427253, 4273768, 4273837, 427404, C23C 1600

Patent

active

054927269

ABSTRACT:
Process for producing novel coated nickel and/or cobalt superalloy bodies having increased resistance to oxidation, corrosion and thermal fatigue at high temperatures. The process comprises 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. Finally, the superalloy body is heated to its solvus temperature to form a ductile surface having an outer zone comprising a platinum-group metal aluminide, optionally ductilized by the solutioning therein of beta chromium. An inner stabilizing zone of silicon-rich phases is formed during said diffusion processes.

REFERENCES:
patent: 3677789 (1972-07-01), Bungardt et al.
patent: 4055706 (1977-10-01), Galmiche et al.
patent: 4293338 (1981-10-01), Rose et al.
patent: 4526814 (1985-07-01), Shankar et al.
patent: 4528215 (1985-07-01), Baldi et al.

Affiliated with

Also associated with

Rating

Platinum group silicide modified aluminide coating process and p 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 coating process and p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Platinum group silicide modified aluminide coating process and p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1354909