公开(公告)号：UA65619C2

公开(公告)日：2004-04-15

申请号：UA2000127358

申请日：2000-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ALLEN WILLIAM PATRICK ,  OLSON WALTER E ,  SHAKH DILIP M ,  SITEL ALAN DAVID

IPC: C23C14/00 ,  C23C14/04 ,  F01D5/00 ,  F01D5/12 ,  F01D5/28 ,  F02C7/30 ,  G06F9/24 ,  G06F15/177

Abstract: A turbine blade for a gas-turbine engine has a nib, a tail element and a band shelf placed between the nib and the tail element. The band shelf has the lower side adjoining the tail element of the journal, this can be between the band shelf and the tail element. The corrosion stable over-layer coating, like îCrÇl, or aluminide including noble metal, or ceramics, this inhibits corrosion, are applied to the parts of the blade that previously have not been covered with such coatings, for instance, to the lower side of the shelf and the journal of the blade. The coating applied prevents corrosion of the blade and crack formation resulting from corrosion under tension in those places. In the cases when the nib is as well covered with coating the nib coating cam be of composition differing from the composition of the coating on the surfaces under the band shelf.

公开(公告)号：DE68921194T2

公开(公告)日：1995-06-14

申请号：DE68921194

申请日：1989-12-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GUPTA DINESH K ,  OLSON WALTER E

IPC: C22C19/00 ,  C23C4/08 ,  C23C10/02 ,  C23C10/48 ,  C23C28/02

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.

公开(公告)号：MX169959B

公开(公告)日：1993-08-03

申请号：MX911687

申请日：1987-11-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MILANIAK MICHAEL STEPHEN ,  OLSON WALTER E ,  OKAWA CLARK TATSUMI

IPC: C23C10/48 ,  C23C10/50 ,  C23C24/02

Abstract: A powder mixture for applying gas phase aluminide coatings to nickel or cobalt base superalloys is described. A preferred mixture consists essentially of Co2Al5, NH4F.HF, and chromium metal. The mixture is substantially free of aluminum oxide.

公开(公告)号：NZ241006A

公开(公告)日：1993-02-25

申请号：NZ24100689

申请日：1989-12-01

Applicant: UNITED TECHNOLOGIES CORP

Inventor： OLSON WALTER E ,  GUPTA DINESH K

IPC: C23C4/08 ,  C23C10/20 ,  C23F11/00

公开(公告)号：MX165823B

公开(公告)日：1992-12-07

申请号：MX911587

申请日：1987-11-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MILANIAK MICHAEL STEPHEN ,  OLSON WALTER E ,  GUPTA DINESH KUMAR

IPC: C23C10/52 ,  C23C10/48

Abstract: Methods are described for forming an yttrium enriched aluminide coating on the surface of a nickel or cobalt base superalloy article. In one preferred embodiment, a pack mixture for forming the coating consists essentially of, by weight percent, 5-35 of an Al-Y-Si alloy, 1-20 CoI2, balance Y2O3.

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.

公开(公告)号：CH635368A5

公开(公告)日：1983-03-31

申请号：CH554078

申请日：1978-05-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DUHL DAVID NOEL ,  OLSON WALTER E

IPC: C22C19/05 ,  C22F1/10 ,  C30B11/00