Silicate resistant thermal barrier coating with alternating layers
AssigneeUnited Technologies Corporation
InventorsKevin W. Schlichting, David A. Litton, Michael J. Maloney, Melvin Freling, John G. Smeggil, David B. Snow
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Abstract
A thermal barrier coating system for use on a turbine engine component which reduces sand related distress is provided. The coating system comprises at least one first layer of a stabilized material selected from the group consisting of zirconia, hafnia, and titania and at least one second layer containing at least one of oxyapatite and garnet. Where the coating system comprises multiple first layers and multiple second layers, the layers are formed or deposited in an alternating manner.
Claims13
1-43. (canceled)
A method for forming a coating system on a substrate comprising the steps of:
- providing a substrate;
- forming a first layer of a stabilized material selected from the group consisting of zirconia, hafnia, and titania on at least one surface of said substrate;
- and
- forming a second layer containing at least one of oxyapatite and garnet over said first layer, and
- depositing an additional first layer over said second layer and depositing an additional second layer of said first layer,
- whereby an outermost layer of said coating system comprises a second layer.
(canceled)
Dependencies are inferred from the claim text.