William Lyle Connor

US Patent:

20090162562, Jun 25, 2009

Filed:

Dec 24, 2007

Appl. No.:

11/963995

Inventors:

Bangalore Aswatha Nagaraj - West Chester OH, US
David John Wortman - Hamilton OH, US
Nicole Marie Polley - Cincinnati OH, US
William Bryan Connor - Mason OH, US
Roger Dale Wustman - Mason OH, US

International Classification:

C23C 16/00
B05D 3/02
B05D 1/36
B05D 1/38
C23C 4/08
H05H 1/24

US Classification:

427456, 427402, 4272557, 4273722, 427569

Abstract:

Methods for coating a substrate includes depositing on the substrate, a inner bond coat layer of a bond coat composition comprising, in weight percent, 14-20% Cr, 5-8% Al, 8-12% Co, 3-7% Ta, 0.1-0.6% Hf, 0.1-0.5% Y, up to about 1% Si, 0.005-0.020% Zr, 0.04-0.08% C, 0.01-0.02% B, with a remainder including nickel (Ni) and incidental impurities, wherein the bond coat composition is substantially free of rhenium; forming an aluminum-containing layer overlying the inner bond coat layer; and, optionally, depositing a thermal barrier coating composition overlying the aluminum-containing layer.

US Patent:

20090162692, Jun 25, 2009

Filed:

Dec 24, 2007

Appl. No.:

11/963993

Inventors:

Bangalore Aswatha Nagaraj - West Chester OH, US
David John Wortman - Hamilton OH, US
Nicole Marie Polley - Cincinnati OH, US
William Bryan Connor - Mason OH, US
Roger Dale Wustman - Mason OH, US

International Classification:

B32B 15/01

US Classification:

428680

Abstract:

Coated superalloy article includes a bond coat comprising an inner bond coat layer disposed on the first surface being formed by deposition of a bond coat composition comprising, in weight percent, 14-20% Cr, 5-8% Al, 8-12% Co, 3-7% Ta, 0.1-0.6% Hf, 0.1-0.5% Y, up to about 1% Si, 0.005-0.020% Zr, 0.04-0.08% C, 0.01-0.02% B, with a remainder including nickel (Ni) and incidental impurities, wherein the bond coating composition is substantially free of rhenium. An aluminum-containing layer overlies the inner bond coat layer. Optionally, a thermal barrier coating overlies the aluminum-containing layer, wherein the thermal barrier coating, if present, is formed by deposition of a thermal barrier coating composition.

US Patent:

56837615, Nov 4, 1997

Filed:

May 25, 1995

Appl. No.:

8/450647

Inventors:

Robert W. Bruce - Loveland OH
Mark A. Rosenzweig - Hamilton OH
Bangalore A. Nagaraj - West Chester OH
Jon C. Schaeffer - Milford OH
William B. Connor - Clifton Park NY
David J. Wortman - Hamilton OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

C23C 1640

US Classification:

427596

Abstract:

A bond-coated substrate is protected with an alpha alumina layer. The alpha alumina layer may be deposited as a relatively thick layer directly onto the bond-coated substrate. In this embodiment, no further ceramic layer overlies the alpha alumina layer. Other ceramics may be mixed into the alpha alumina layer, however. In another embodiment, a layer of a ceramic other than alpha alumina is deposited over the bond-coated substrate, and an alpha alumina layer is deposited over the ceramic layer.

US Patent:

61239976, Sep 26, 2000

Filed:

Oct 15, 1997

Appl. No.:

8/950665

Inventors:

Jon C. Schaeffer - Milford OH
William B. Connor - Mason OH
Robert D. Field - Los Alamos NM

Assignee:

General Electric Company - Cincinnati OH

International Classification:

B05D 302
C23C 1400

US Classification:

4273837

Abstract:

A thermal barrier coating system and a method for forming the coating system which yields a thermal barrier coating having good adhesion to a bond coat overlying a metal superalloy substrate. The adhesion of the bond coat and the thermal barrier coating is enhanced by forming a mature. alpha. -alumina (Al. sub. 2 O. sub. 3) scale at the bond coat-TBC interface. The desired mature. alpha. -alumina scale can be obtained by utilizing one or more of the following steps: preoxidation of the bond coat at certain minimum temperatures and durations; inoculation of the surface of the bond coat; surface doping or alloying of the bond coat surface; and the addition of noble metals to the bond coat. Each of these steps promotes the formation of. alpha. -alumina and avoids the formation of the. gamma. ,. delta. and. theta.

US Patent:

57801100, Jul 14, 1998

Filed:

Mar 18, 1997

Appl. No.:

8/819344

Inventors:

Jon C. Schaeffer - Milford OH
William B. Connor - Clifton Park NY
Robert D. Field - Los Alamos NM

Assignee:

General Electric Company - Cincinnati OH

International Classification:

B05D 300
C23C 1400

US Classification:

427327

Abstract:

A method for manufacturing an article for use in a gas tubine engine is disclosed, which comprises applying a metallic bond coating on a superalloy substrate; surface doping a surface of the bond coating with at least one element selected from the group consisting of Fe, Cr and Y by plating, ion implantation, MOCVD and sputttering; and then applying an insulative ceramic coating on the bond coating.

US Patent:

55387969, Jul 23, 1996

Filed:

Oct 13, 1992

Appl. No.:

7/960494

Inventors:

Jon C. Schaffer - Milford OH
Wendy H. Murphy - Cincinnati OH
William B. Connor - Cincinnati OH
Bangalore A. Nagaraj - West Chester OH
Himanshu B. Vakil - Schenectady NY

Assignee:

General Electric Company - Cincinnati OH

International Classification:

B32B 1504

US Classification:

428469

Abstract:

A coated article is prepared by melting and casting an article substrate formed of a nickel-base superalloy. The article substrate is heated in a hydrogen-containing atmosphere at a temperature of at least 2000. degree. F. for a period sufficient to desulfurize the substrate to a sulfur content of less than about 1 part per million. Optionally, an aluminum-oxide environmental coating is provided overlying the substrate. A ceramic thermal barrier coating is applied overlying the substrate. Significantly, there being no bond coat applied to the substrate prior to the application of the thermal barrier coating.