Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HIGH PURITY POWDERS AND COATINGS PREPARED THEREFROM
This invention relates to high purity yttria or ytterbia stabilized zirconia powders comprising from about 0 to about 0.15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). Thermal barrier coatings for protecting a substrate such as blades, vanes and seal surfaces of gas turbine engines made from the high purity yttria or ytterbia stabilized zirconia powders have a plurality of vertical macrocracks homogeneously dispersed throughout the coating to improve its thermal fatigue resistance. The invention also relates to processes for producing the thermal barrier coatings.
HIGH PURITY POWDERS AND COATINGS PREPARED THEREFROM
This invention relates to high purity yttria or ytterbia stabilized zirconia powders comprising from about 0 to about 0.15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). Thermal barrier coatings for protecting a substrate such as blades, vanes and seal surfaces of gas turbine engines made from the high purity yttria or ytterbia stabilized zirconia powders have a plurality of vertical macrocracks homogeneously dispersed throughout the coating to improve its thermal fatigue resistance. The invention also relates to processes for producing the thermal barrier coatings.
HIGH PURITY POWDERS AND COATINGS PREPARED THEREFROM
POUDRES DE GRANDE PURETE ET REVETEMENTS ELABORES A PARTIR DE CELLES-CI
TAYLOR THOMAS A (Autor:in) / FEUERSTEIN ALBERT (Autor:in) / BOLCAVAGE ANN (Autor:in) / APPLEBY DANNY LEE (Autor:in) / HITCHMAN NEIL (Autor:in) / MUNROE JAMES (Autor:in)
14.04.2015
Patent
Elektronische Ressource
Englisch
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