Michael W Weimer

US Patent:

6219915, Apr 24, 2001

Filed:

Nov 18, 1999

Appl. No.:

9/443118

Inventors:

Jeffrey A. Conner - Hamilton OH
Michael J. Weimer - Loveland OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

B23P 600

US Classification:

298891

Abstract:

A gas turbine engine hot section component having a ceramic thermal barrier coating is repaired by removing the ceramic thermal barrier coating, removing oxidation products and corrosion products from the metallic bond coating beneath the ceramic thermal barrier coating, applying a noble metal to the component, diffusing the noble metal into the component substrate, and aluminiding the component to provide an outermost noble metal-Al layer.

US Patent:

6869508, Mar 22, 2005

Filed:

May 15, 2002

Appl. No.:

10/063808

Inventors:

Ramgopal Darolia - West Chester OH, US
Reed Roeder Corderman - Niskayua NY, US
Joseph David Rigney - Milford OH, US
Michael James Weimer - Loveland OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

C23C014/34
C23C016/00
H05H001/24

US Classification:

20419211, 20429804, 20429815, 118723 VE, 118723 EB, 118719, 118726, 118729, 427576, 427595, 427596, 427597, 4272481, 427251, 4272555

Abstract:

A PVD process and apparatus () for depositing a coating () from multiple sources () of different materials. The process and apparatus () are particulaity intended to deposit a beta-nickel aluminide coating () containing one or more elements whose vapor pressures are lower than NiAl. The PVD process and apparatus () entail feeding at least two materials () into a coating chamber () and evaporating the materials () at different rates from separate molten pools () thereof. Articles () to be coated are suspended within the coating chamber (), and transported with a support apparatus () relative to the two molten pools () so as to deposit a coating () with a controlled composition that is a mixture of the first and second materials ().

US Patent:

7314674, Jan 1, 2008

Filed:

Dec 15, 2004

Appl. No.:

11/011695

Inventors:

Brian Thomas Hazel - West Chester OH, US
Michael James Weimer - Loveland OH, US

Assignee:

General Electric Company - Schnectady NY

International Classification:

B32B 15/04
F03B 3/12

US Classification:

428701, 428632, 428702, 428469, 416241 B, 416241 R

Abstract:

A composition comprising a particulate corrosion resistant component, and a glass-forming binder component. The particulate corrosion resistant component comprises from 0 to about 95% alumina particulates, and from about 5 to 100% corrosion resistant non-alumina particulates having a CTE greater than that of the alumina particulates. Also disclosed is an article comprising a turbine component comprising a metal substrate and a corrosion resistant coating having thickness up to about 10 mils (254 microns) overlaying the metal substrate. At least the layer of this coating adjacent to the metal substrate comprises a glass-forming binder component and the particulate corrosion resistant component adhered to the glass-forming binder component. Further disclosed is a method comprising the following steps: (a) providing a turbine component comprising the metal substrate; (b) depositing on the metal substrate a corrosion resistant coating composition; and (c) curing the deposited corrosion resistant coating composition to form at least one layer of a corrosion resistant coating having a thickness up to about 10 mils (254 microns).

US Patent:

7364801, Apr 29, 2008

Filed:

Dec 6, 2006

Appl. No.:

11/567382

Inventors:

Brian Thomas Hazel - West Chester OH, US
Michael James Weimer - Loveland OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 15/04
B32B 15/18
B32B 15/20
F01D 5/14

US Classification:

428632, 428215, 428335, 428336, 428666, 428678, 428680, 428681, 416229 R, 416241 R

Abstract:

An environmental coating suitable for use on turbine components, such as turbine disks and turbine seal elements, formed of alloys susceptible to oxidation and hot corrosion. The environmental coating is predominantly a solid solution phase of nickel, iron, and/or cobalt. The coating contains about 18 weight percent to about 60 weight percent chromium, which ensures the formation of a protective chromia (CrO) scale while also exhibiting high ductility. The coating may further contain up to about 8 weight percent aluminum, as well as other optional additives. The environmental coating is preferably sufficiently thin and ductile to enable compressive stresses to be induced in the underlying substrate through shot peening without cracking the coating.

US Patent:

7455890, Nov 25, 2008

Filed:

Aug 5, 2003

Appl. No.:

10/634543

Inventors:

Ramgopal Darolia - West Chester OH, US
Michael James Weimer - Loveland OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

C23C 14/48
C23C 14/16

US Classification:

427528, 427531, 427527

Abstract:

A turbine engine rotor component, such as a compressor or turbine disk or seal element, is protected from corrosion by implanting aluminum or chromium ions, or mixtures thereof, on the surface of the component. Additional metal ions, such as rare earth and reactive elements, may also be implanted on the surface of the component. The component may be heated in a nonoxidizing atmosphere at a specified temperature and time to diffuse the ions into the surface. The component is typically then heated or maintained at an elevated temperature in the presence of oxygen to form an oxide coating on the surface of the component.

US Patent:

7547478, Jun 16, 2009

Filed:

Dec 13, 2002

Appl. No.:

10/318760

Inventors:

Wayne Ray Grady - Fairfield OH, US
Thomas Joseph Kelly - Cincinnati OH, US
Michael James Weimer - Loveland OH, US
Nripendra Nath Das - West Chester OH, US
Mark Alan Rosenzweig - Hamilton OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 15/04
B32B 18/00

US Classification:

428632, 428650, 428655, 428670, 428680, 428469, 428697, 428701, 427585, 427427, 427252, 4272557, 416241 R, 416241 B

Abstract:

A coated article has a metallic substrate with a substrate composition, and a metallic coating overlying and contacting the metallic substrate. The metallic coating has a metallic-coating composition different from the substrate composition. A protective coating overlies and contacts the metallic coating. The protective coating includes an aluminide layer overlying and contacting the metallic coating, and optionally a thermal barrier coating overlying and contacting the aluminide layer. This structure may be used to restore a key dimension of an article that has previously been in service and to protect the article as well.

US Patent:

7604867, Oct 20, 2009

Filed:

Dec 20, 2005

Appl. No.:

11/311137

Inventors:

Brian Thomas Hazel - West Chester OH, US
Michael James Weimer - Loveland OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 15/04
B32B 9/00

US Classification:

428472, 428469, 428632, 428701, 428702, 428325, 428332

Abstract:

A composition comprising a glass-forming binder component and a particulate corrosion resistant component. The particulate corrosion resistant component comprises corrosion resistant particulates having: a CTEof at least about 4 and being solid at a temperature of about 1300 F. (704 C. ) or greater; and a maximum median particle size defined by one of the following formulas: (a) for a CTEof 8 or less, an Mequal to or less than (4. 375×CTE)−10; and (b) for a CTEof greater than 8, an Mequal to or less than (−4. 375×CTE)+60, wherein CTEis the average CTE of the corrosion resistant particulates and wherein Mis the median equivalent spherical diameter (ESD), in microns, of the corrosion resistant particulates. Also disclosed is an article comprising a turbine component comprising a metal substrate and a corrosion resistant coating overlaying the metal substrate, as well as a method for forming at least one layer of the corrosion resistant coating adjacent to the metal substrate. The corrosion resistant coating has a maximum thickness defined by one of the following formulas: (3) for a CTEof 8 or less, an Tequal to or less than (1.

US Patent:

7754342, Jul 13, 2010

Filed:

Dec 19, 2005

Appl. No.:

11/311720

Inventors:

Brian T. Hazel - West Chester OH, US
Jane A. Murphy - Franklin OH, US
Andrew J. Skoog - West Chester OH, US
Bryan T. Bojanowski - Cincinnati OH, US
Michael J. Weimer - Loveland OH, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

B32B 15/04
F03B 3/12

US Classification:

428632, 428548, 428469, 428701, 428702, 416241 B

Abstract:

A corrosion resistant coating for gas turbine engine includes a glassy ceramic matrix wherein the glassy matrix is silica-based, and includes corrosion resistant particles selected from refractory particles and non-refractory MCrAlX particles, and combinations thereof. The corrosion resistant particles are substantially uniformly distributed within the matrix, and provide the coating with corrosion resistance. Importantly the coating of the present invention has a coefficient of thermal expansion (CTE) greater than that of alumina at engine operating temperatures. The CTE of the coating is sufficiently close to the substrate material such that the coating does not spall after frequent engine cycling at temperatures above 1200 F.