Larry S Rosenzweig

US Patent:

6544351, Apr 8, 2003

Filed:

Jul 12, 2001

Appl. No.:

09/682034

Inventors:

Hongyu Wang - Niskayuna NY
James Anthony Ruud - Delmar NY
Larry Steven Rosenzweig - Clifton Park NY

Assignee:

General Electric Company - Niskayuna NY

International Classification:

C23C 3000

US Classification:

148 22, 428546, 428570, 4285395, 419 66

Abstract:

A coating composition produces a protective coating to a substrate, which coating has an improved surface smoothness. The coating composition comprises a mixture of at least a first type of particles and a second type of particles that are dispersed in a liquid medium. The particles form a total population of particles having a median ESD in a range from about 1 to about 7 micrometers. The different types of particles have different median ESDs. The first type of particles has a maximum ESD of about 40 micrometers, and the second type of particles has a maximum ESD of about 20 micrometers. A method for producing a coating having an improved surface smoothness comprises applying such a coating composition on a substrate and curing the coating composition to produce a protective coating. The coating may be further densified by a burnishing process or further improved by applying another coating comprising particles having ESDs less than about 4 micrometers.

US Patent:

8192831, Jun 5, 2012

Filed:

Dec 10, 2008

Appl. No.:

12/332007

Inventors:

Larry Steven Rosenzweig - Clifton Park NY, US
James Anthony Ruud - Delmar NY, US
Mohan Manoharan - Bangalore, IN
Brian Harvey Pilsner - Mason OH, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B32B 3/00
B32B 5/16
B32B 9/00
B32B 19/00

US Classification:

428161, 428156, 428172, 428323, 428328, 428689, 428702

Abstract:

Articles coated via a plasma spray process, and methods for making such articles, are presented. For example, one embodiment is an article comprising a substrate comprising a top surface and a channel disposed in the substrate. The channel is defined by an internal channel surface disposed beneath the top surface and having a terminal end at an orifice at the top surface. A coating is disposed on the top surface and on at least a portion of the internal channel surface. A coating thickness at any point on the internal channel surface is less than a nominal coating thickness on the top surface, and the coating comprises a plurality of at least partially melted and solidified particles.

US Patent:

8389106, Mar 5, 2013

Filed:

Mar 15, 2012

Appl. No.:

13/420650

Inventors:

Larry Steven Rosenzweig - Clifton Park NY, US
James Anthony Ruud - Delmar NY, US
Mohan Manoharan - Bangalore, IN
Brian Harvey Pilsner - Mason OH, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B32B 3/00
B32B 5/16
B32B 9/00
B32B 19/00

US Classification:

428161, 428156, 428172, 428323, 428328, 428689, 428702

Abstract:

Articles coated via a plasma spray process, and methods for making such articles, are presented. For example, one embodiment is an article comprising a substrate comprising a top surface and a channel disposed in the substrate. The channel is defined by an internal channel surface disposed beneath the top surface and having a terminal end at an orifice at the top surface. A coating is disposed on the top surface and on at least a portion of the internal channel surface. A coating thickness at any point on the internal channel surface is less than a nominal coating thickness on the top surface, and the coating comprises a plurality of at least partially melted and solidified particles.

US Patent:

8586172, Nov 19, 2013

Filed:

May 6, 2008

Appl. No.:

12/115819

Inventors:

Larry Steven Rosenzweig - Clifton Park NY, US
James Anthony Ruud - Delmar NY, US
Luc Stèphane Leblanc - Schenectady NY, US
Paul Matthew Thomas - Queensbury NY, US
Scott Sheridan Smith - Scotia NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

B32B 3/00
B32B 5/16
C23C 4/04
C23C 4/12

US Classification:

428206, 4281951, 428210, 4283179, 428332, 428409

Abstract:

Coatings and articles suitable for use in high temperature environments, for example, are presented. One embodiment is a coating that comprises a plurality of elongate material growth domains defined between domain boundaries. The domains have an intra-domain density of at least about 75% of theoretical density, have a substantially equiaxed grain morphology, and comprise a plurality of at least partially melted and solidified particles. Another embodiment is a coating that comprises a matrix comprising a substantially equiaxed grain morphology and a plurality of vertically oriented cracks disposed in the matrix. Further embodiments include articles comprising one or more of the coatings described above.

US Patent:

20070278108, Dec 6, 2007

Filed:

Jun 1, 2006

Appl. No.:

11/444918

Inventors:

Larry Steven Rosenzweig - Clifton Park NY, US
Grigorii Lev Soloveichik - Latham NY, US
Guillermo Daniel Zappi - Niskayuna NY, US

International Classification:

C25F 1/00
C25B 1/02

US Classification:

205637, 205705

Abstract:

A method of forming a porous nickel coating is provided. The method includes the steps of: depositing a coating onto a substrate by melting and atomizing two consumable electrode wires of a selected composition in a wire-arc spray device, so as to form a molten, atomized material, and directing the material to the substrate to form a coating deposit; the selected composition including nickel and a sacrificial metal; and then dissolving at least a portion of the sacrificial metal from the coating deposit by applying a positive potential in an alkaline electrolyte, so as to obtain a porous nickel coating. An electrolytic cell that includes a porous nickel coating is also described.

US Patent:

20080085371, Apr 10, 2008

Filed:

Oct 5, 2006

Appl. No.:

11/538880

Inventors:

Sauri Gudlavalleti - Santa Clara CA, US
Larry Steven Rosenzweig - Clifton Park NY, US
Shu Ching Quek - Clifton Park NY, US
Chandra Sekher Yerramalli - Niskayuna NY, US

Assignee:

GENERAL ELECTRIC COMPANY - SCHENECTADY NY

International Classification:

B05D 3/00
B05D 1/08

US Classification:

427446, 118300

Abstract:

A thermal spray system is provided. The thermal spray system includes a spray assembly for applying a coating to a workpiece. The thermal spray system also includes a fixturing assembly couplable to the workpiece for positioning the workpiece relative to the thermal spray system, wherein the fixturing assembly permits the workpiece to distort during application of the coating to minimize residual strain buildup within the workpiece and reduce coating stresses.

US Patent:

20100086397, Apr 8, 2010

Filed:

Oct 3, 2008

Appl. No.:

12/244918

Inventors:

Kripa Kiran Varanasi - Clifton Park NY, US
Nitin Bhate - Rexford NY, US
Michael David Carroll - West Chester OH, US
Farshad Ghasripoor - Scotia NY, US
Ambarish Jayant Kulkarni - Niskayuna NY, US
Larry Steven Rosenzweig - Clifton Park NY, US
Jerry Donald Schell - Cincinnati OH, US
Dalong Zhong - Niskayuna NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F01D 9/02
F01D 5/14
F01D 25/24
C23C 14/35

US Classification:

415200, 416241 R, 20419215

Abstract:

A turbine engine component includes at least one treated surface wherein the treated surface has a surface roughness (Ra) of less than 12 microinches; and a hard coating disposed on the superfinished surface, wherein the hard coating is a nitride and/or a carbide material at a thickness of less than 50 microns formed using electron beam physical vapor deposition, cathodic arc evaporation, or magnetron sputtering. disclosed are methods for substantially preventing micropitting on a surface of a turbine engine component.

US Patent:

20100124616, May 20, 2010

Filed:

Nov 19, 2008

Appl. No.:

12/273854

Inventors:

Larry Steven Rosenzweig - Clifton Park NY, US
Farshad Ghasripoor - Glenville NY, US
Nuo Sheng - Schenectady NY, US
Luc Stephane Leblanc - Clifton Park NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B05D 3/02
H05H 1/26
C23C 4/06

US Classification:

427455, 427226, 4273722, 427535

Abstract:

A method of forming a coating comprises depositing a first coating layer on a surface of a substrate, wherein the coating comprises a ceramic or metal, a lubricant, and a fugitive material. At least a portion of the fugitive material is decomposed, transformed or volatized by heating the first coating layer with a localized heat source.