Julie D Chapman

US Patent:

20180154392, Jun 7, 2018

Filed:

Dec 6, 2016

Appl. No.:

15/370447

Inventors:

- Schenectady NY, US
Shankar Sivaramakrishnan - Niskayuna NY, US
Julie Marie Chapman - West Chester OH, US
Ambarish Jayant Kulkarni - Glenville NY, US
Bernard Patrick Bewlay - Niskayuna NY, US
Mehmet M. Dede - Liberty Township OH, US
Larry Steven Rosenzweig - Clifton Park NY, US

International Classification:

B05D 5/00
B05D 1/12
B05D 7/14
C23C 24/04
C23C 28/04
F01D 25/00

Abstract:

A coated component, along with methods of its formation, restoration, and use, is provided. The coated component may include a substrate defining a surface; a thermal barrier coating on the surface of the substrate; a layer of environmental contaminant compositions (e.g., CMAS) on the thermal barrier coating; and a chemical barrier coating on the layer of environmental contaminant compositions.

US Patent:

20140220378, Aug 7, 2014

Filed:

Jul 5, 2012

Appl. No.:

13/542057

Inventors:

Bangalore Aswatha Nagaraj - West Chester OH, US
Douglas Gerard Konitzer - West Chester OH, US
Julie Marie Chapman - Hamilton OH, US
Venkat Subramaniam Venkataramani - Clifton Park NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F01D 25/00
C04B 35/48
F01D 5/28

US Classification:

428623, 428213, 1062864, 428215, 4273837, 427344

Abstract:

Coating systems and processes by which the coating systems can be deposited to be resistant to contaminants, and particularly resistant to infiltration and damage caused by CMAS. The coating systems include inner and outer ceramic layers. The inner ceramic layer consists essentially of zirconia stabilized by about 6 to about 9 weight percent yttria and optionally contains greater than 0.5 to 10 weight percent hafnium oxide. The outer ceramic layer overlies and contacts the inner ceramic layer to define the outermost surface of the coating system. The outer ceramic layer consists essentially of zirconia stabilized by about 25 to about 75 weight percent yttria, has a thickness that is less than the thickness of the inner ceramic layer and further contains greater than 0.5 to 10 weight percent hafnium oxide and optionally 1 to 10 weight percent tantalum oxide. The outer ceramic layer has a porosity level that is lower than that of the inner ceramic layer.