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:
Mar. 27, 2018
Filed:
Jun. 11, 2014
Herakles, Le Haillan, FR;
Universite DE Bordeaux, Bordeaux, FR;
Caroline Louchet, Arsac, FR;
Emilie Courcot, Le Taillan Medoc, FR;
Francis Rebillat, Merignac, FR;
Arnaud Delehouze, Sainneville sur Seine, FR;
HERAKLES, Le Haillan, FR;
UNIVERSITE DE BORDEAUX, Bordeaux, FR;
Abstract
A part including a substrate in which at least a portion adjacent to a surface of the substrate is made of a refractory material containing silicon, is protected by an environmental barrier formed on the surface of the substrate and having at least a self-healing layer containing a rare earth silicate. The self-healing layer is formed: for at least 90 mol %, by a system constituted by 30 mol % to at most 80 mol % of at least one rare earth silicate RESiO, RE being a rare earth, and at least 20 mol % to 70 mol % of manganese oxide MnO; and for at most 10 mol %, by one or more oxides other than MnO, having a eutectic point with SiO2 less than or equal to 1595° C.; the self-healing layer presenting a liquid phase having a self-healing function at least throughout the temperature range 1200° C. to 1400° C., while conserving a majority solid phase.