HEAT BARRIER COMPOSITION, A MECHANICAL SUPERALLOY ARTICLE PROVIDED WITH A CERAMIC COATING HAVING SUCH A COMPOSITION, AND A METHOD OF MAKING THE CERAMIC COATING
La nouvelle composition de barrière thermique de faible conductivité thermique comporte une base de zircone et un oxyde de dysprosium pour assurer un double rôle de stabiliser la zircone et d'abaisser la conductivité thermique de la zircone. Optionnellement, la zircone comporte en outre un oxyd...
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Main Authors | , , , |
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Format | Patent |
Language | English French |
Published |
12.07.2011
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Subjects | |
Online Access | Get full text |
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Summary: | La nouvelle composition de barrière thermique de faible conductivité thermique comporte une base de zircone et un oxyde de dysprosium pour assurer un double rôle de stabiliser la zircone et d'abaisser la conductivité thermique de la zircone. Optionnellement, la zircone comporte en outre un oxyde métallique contenant un ion métallique quadrivalent choisi parmi le dioxyde de hafnium, de cérium, d'uranium, ou un mélange de ces oxydes.
Thermal barrier composition is based on zirconia containing dysprosium oxide for stabilization and thermal conductivity reduction. A low thermal conductivity thermal barrier composition is based on zirconia containing dysprosium oxide, for stabilization and thermal conductivity reduction, and optionally an oxide of a tetravalent metal of atomic weight greater than that of zirconium. Independent claims are also included for: (i) a mechanical part of a superalloy having a ceramic coating of the above composition; and (ii) a method of forming a thermal barrier coating on a superalloy substrate by depositing the above composition on a bond layer on the substrate. |
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Bibliography: | Application Number: CA20002318612 |