Catalytic thermal barrier coatings

Details Catalytic thermal barrier coatings Catalytic thermal barrier coatings

2005-10-06

2009-06-02

Duong, Tom (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

Reexamination Certificate

active

07541005

ABSTRACT:
A catalyst element (30) for high temperature applications such as a gas turbine engine. The catalyst element includes a metal substrate such as a tube (32) having a layer of ceramic thermal barrier coating material (34) disposed on the substrate for thermally insulating the metal substrate from a high temperature fuel/air mixture. The ceramic thermal barrier coating material is formed of a crystal structure populated with base elements but with selected sites of the crystal structure being populated by substitute ions selected to allow the ceramic thermal barrier coating material to catalytically react the fuel-air mixture at a higher rate than would the base compound without the ionic substitutions. Precious metal crystallites may be disposed within the crystal structure to allow the ceramic thermal barrier coating material to catalytically react the fuel-air mixture at a lower light-off temperature than would the ceramic thermal barrier coating material without the precious metal crystallites.

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