Ceramic abradable coating with controllable hardness and abradability
AssigneeRtx Corporation
InventorsNizar B. Zahed, Anna M. Mercaldi, Mackenzie Vinson, Agnieszka M. Wusatowska-Sarnek
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Abstract
An abradable coating comprising a ceramic matrix layer disposed on a bond coat layer, wherein the abradable coating has a micro-hardness of 35 to 60 as measured on the Rockwell HRC hardness scale in accordance with ASTM E18.
Claims19
An abradable coating comprising a ceramic matrix layer disposed on a bond coat layer, wherein the abradable coating has a micro-hardness of 35 to 60 as measured on the Rockwell HRC hardness scale in accordance with ASTM E18, wherein the ceramic matrix layer comprises titanium oxide, lanthanum zirconate, gadolinium zirconate, yttria-stabilized zirconia, or a combination thereof.
(canceled)
A method of manufacturing an abradable coating on a component comprising:
- providing the component;
- disposing a bond coat on the component;
- disposing a ceramic matrix layer on the bond coat to provide an as-coated component, wherein the bond coat layer and the ceramic matrix layer on the as-coated component comprise a first coating;
- and
- soaking the as-coated component in a hydroxide solution to convert the first coating into the abradable coating.
Dependencies are inferred from the claim text.