Ceramic compositions useful for thermal barrier coatings...

Details Ceramic compositions useful for thermal barrier coatings... Ceramic compositions useful for thermal barrier coatings...

2005-11-01

2005-11-01

McNeil, Jennifer (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S633000, C428S697000, C428S699000, C428S701000, C428S702000, C428S336000, C501S103000, C501S104000, C501S105000, C427S453000, C427S585000, C416S24100B

Reexamination Certificate

active

06960395

ABSTRACT:
Ceramic compositions comprising at least about 91 mole % zirconia and up to about 9 mole % of a stabilizer component comprising a first metal oxide having selected from the group consisting of yttria, calcia, ceria, scandia, magnesia, india and mixtures thereof. This stabilizer component further comprises a second metal oxide of a trivalent metal atom selected from the group consisting of lanthana, gadolinia, neodymia, samaria, dysprosium, and mixtures thereof and a third metal oxide of a trivalent metal atom selected from the group consisting of erbia, ytterbia and mixtures thereof. These ceramic compositions are useful in preparing thermal barrier coatings having reduced thermal conductivity for the metal substrate of articles that operate at, or are exposed to, high temperatures.

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