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Method for preparing zirconium oxide-doped gadolinium niobate amorphous high-temperature ceramic coating
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a method for preparing a zirconium oxide-doped gadolinium niobate amorphous high-temperature ceramic coating. The method comprises the steps that powder formed by mixing ZrO2, Gd2O3 and Nb2O5 is subjected to high-temperature sintering, a sintering body is obtained, and the stoichiometric ratio of zirconia doped niobic acid is x mol%ZrO2+Gd3NbO7; the sintering body is smashed into blocks of 2-3 mm; the blocks are deposited on an alloy matrix through an EB-PVD method, and the amorphous ceramic coating with the thickness of 200-300 micrometers is obtained, and according to the technological parameters, the air pressure of a cabin is not higher than 3*10-6Torr, the deposition rate is not lowerthan 10 nm/min, and the rotating rate of a sample is not lower than 45 r/min. The amorphous ceramic coating deposited on the alloy matrix has the extremely low heat conductivity, thus a very good heatinsulation effect can be achieved on the alloy matrix in a high-temperature environment, and the use environmental temperature of the alloy matrix is improved.
本发明涉及热障涂层技术领域，具体公开了一种氧化锆掺杂铌酸钆非晶高温陶瓷涂层的制备方法，将ZrO2、Gd2O3和Nb2O5混合后的粉末进行高温烧结得到烧结体，氧化锆掺杂铌酸的化学计量比为x mol％ZrO2+Gd3NbO7；将烧结体粉碎成2～3mm的块体；采用EB‑PVD法将块体沉积到合金基体上，得到厚度为200～300μm的非晶陶瓷涂层，工艺参数为：舱室气压不高于3×10‑6Torr；沉积速率不低于10nm/min；样品台旋转速率不低于45r/min。本专利中沉积在合金基体上的非晶陶瓷涂层有着极低的热导率，这样能够对合金基体在高温环境下起到很好的隔热的效果，提高合金基体使用的环境温度。
Method for preparing zirconium oxide-doped gadolinium niobate amorphous high-temperature ceramic coating
The invention relates to the technical field of thermal barrier coatings, and particularly discloses a method for preparing a zirconium oxide-doped gadolinium niobate amorphous high-temperature ceramic coating. The method comprises the steps that powder formed by mixing ZrO2, Gd2O3 and Nb2O5 is subjected to high-temperature sintering, a sintering body is obtained, and the stoichiometric ratio of zirconia doped niobic acid is x mol%ZrO2+Gd3NbO7; the sintering body is smashed into blocks of 2-3 mm; the blocks are deposited on an alloy matrix through an EB-PVD method, and the amorphous ceramic coating with the thickness of 200-300 micrometers is obtained, and according to the technological parameters, the air pressure of a cabin is not higher than 3*10-6Torr, the deposition rate is not lowerthan 10 nm/min, and the rotating rate of a sample is not lower than 45 r/min. The amorphous ceramic coating deposited on the alloy matrix has the extremely low heat conductivity, thus a very good heatinsulation effect can be achieved on the alloy matrix in a high-temperature environment, and the use environmental temperature of the alloy matrix is improved.
本发明涉及热障涂层技术领域，具体公开了一种氧化锆掺杂铌酸钆非晶高温陶瓷涂层的制备方法，将ZrO2、Gd2O3和Nb2O5混合后的粉末进行高温烧结得到烧结体，氧化锆掺杂铌酸的化学计量比为x mol％ZrO2+Gd3NbO7；将烧结体粉碎成2～3mm的块体；采用EB‑PVD法将块体沉积到合金基体上，得到厚度为200～300μm的非晶陶瓷涂层，工艺参数为：舱室气压不高于3×10‑6Torr；沉积速率不低于10nm/min；样品台旋转速率不低于45r/min。本专利中沉积在合金基体上的非晶陶瓷涂层有着极低的热导率，这样能够对合金基体在高温环境下起到很好的隔热的效果，提高合金基体使用的环境温度。
Method for preparing zirconium oxide-doped gadolinium niobate amorphous high-temperature ceramic coating
一种氧化锆掺杂铌酸钆非晶高温陶瓷涂层的制备方法
FENG JING (author) / WANG YITAO (author) / YANG KAILONG (author) / ZHENG QI (author) / WANG JUN (author) / CHEN LIN (author) / LI ZHENJUN (author) / WANG FENG (author)
2020-11-27
Patent
Electronic Resource
Chinese
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