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Method of making high temperature TBCs with ultra low thermal conductivity and abradability
A method for fabricating thermal barrier coatings. The thermal barrier coatings are produced with a fine grain size by reverse co-precipitation of fine powders. The powders are then sprayed by a solution plasma spray that partially melts the fine powders while producing a fine grain size with dense vertical cracking. The coatings comprise at least one of 45% -65% Yb 2 O 3 the balance Zr, Yb/Y/Hf/Ta the balance Zr and 2.3-7.8% La, 1.4-5.1% Y and the balance Zr and are characterized by a thermal conductivity that is about 25-50% lower than that of thermal barrier coatings comprising YSZ. The thermal barrier coatings also are characterized by at least one of excellent erosion resistance, fracture toughness and abrasion resistance.
Method of making high temperature TBCs with ultra low thermal conductivity and abradability
A method for fabricating thermal barrier coatings. The thermal barrier coatings are produced with a fine grain size by reverse co-precipitation of fine powders. The powders are then sprayed by a solution plasma spray that partially melts the fine powders while producing a fine grain size with dense vertical cracking. The coatings comprise at least one of 45% -65% Yb 2 O 3 the balance Zr, Yb/Y/Hf/Ta the balance Zr and 2.3-7.8% La, 1.4-5.1% Y and the balance Zr and are characterized by a thermal conductivity that is about 25-50% lower than that of thermal barrier coatings comprising YSZ. The thermal barrier coatings also are characterized by at least one of excellent erosion resistance, fracture toughness and abrasion resistance.
Method of making high temperature TBCs with ultra low thermal conductivity and abradability
Verfahren zur Herstellung von Hochtemperatur-TBCs mit ultraniedriger Wärmeleitfähigkeit und Zerreibbarkeit
Procédé de fabrication de TBC à haute température avec une très faible conductivité thermique et abradabilité
PARAKALA PADMAJA (author) / PABLA SURINDER S (author) / MARGOLIES JOSHUA LEE (author) / RUUD JAMES ANTHONY (author) / ANAND KRISHNAMURTHY (author) / SCHAEFFER JON CONRAD (author)
2019-01-30
Patent
Electronic Resource
English
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