The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
Aug. 08, 2018
Rolls-royce Corporation, Indianapolis, IN (US);
Rolls-royce North American Technologies, Inc., Indianapolis, IN (US);
Rolls-royce Plc, London, GB;
Ngunjoh Lawrence Ndamka, Derby, GB;
Li Li, Carmel, IN (US);
Ann Bolcavage, Indianapolis, IN (US);
Bruce Edward Varney, Greenwood, IN (US);
Sean E. Landwehr, Avon, IN (US);
ROLLS-ROYCE CORPORATION, Indianapolis, IN (US);
ROLLS-ROYCE PLC, London, GB;
ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES, INC., Indianapolis, IN (US);
Abstract
A method includes predicting a composition of calcium-magnesium-aluminum-silicate (CMAS) to be encountered by a high temperature mechanical system during use of the high temperature mechanical system. The method further includes selecting a composition of a CMAS-resistant barrier coating layer based at least in part on the predicted composition of CMAS. The CMAS-resistant barrier coating layer includes a base composition and at least one secondary oxide selected based on the predicted composition of CMAS. The at least one secondary oxide includes at least one of an oxide of a divalent element, an oxide of a trivalent element, or an oxide of a tetravalent element. The CMAS-resistant barrier coating layer comprises greater than 0 mol. % and less than about 7 mol. % of the at least one secondary oxide.