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Thermal barrier coating material, thermal barrier coating and preparation method thereof
The invention provides a thermal barrier coating material, a thermal barrier coating and a preparation method thereof. Chemical constitution of the thermal barrier coating material is [(La1-xRx)2Zr2O7]y(SrZrO3)1-y, wherein x is less than or equal to 0.5 and greater than or equal to 0; y is less than or equal to 0.7 and greater than or equal to 0.3; and R is one of Nd, Sm, Eu, Gd and Dy or a combination of more than one of Nd, Sm, Eu, Gd and Dy. The preparation method comprises the following steps: Sr(NO3)2, R(NO3)3.6H2O, La(NO3)3.6H2O and Zr(NO3)4.5H2O which are used as raw materials are mixed according to the molar ratio of (1-x)y:2xy:(1+y):(1-y), wherein x is less than or equal to 0.5 and greater than or equal to 0, y is less than or equal to 0.7 and greater than or equal to 0.3, R is one of Nd, Sm, Eu, Gd and Dy or a combination of more than one of Nd, Sm, Eu, Gd and Dy; a transparent solution is prepared from the above raw materials by using deionized water; under the condition of stirring, the transparent solution is added into a proper amount of diluted ammonia water or an ammonium oxalate solution so as to obtain a suspension; after undergoing ageing, the suspension undergoes suction filtration while repeated washing and precipitation are carried out with deionized water, so as to obtain a filter cake; and the filter cake is dried and calcined to obtain the thermal barrier coating material finished product.
Thermal barrier coating material, thermal barrier coating and preparation method thereof
The invention provides a thermal barrier coating material, a thermal barrier coating and a preparation method thereof. Chemical constitution of the thermal barrier coating material is [(La1-xRx)2Zr2O7]y(SrZrO3)1-y, wherein x is less than or equal to 0.5 and greater than or equal to 0; y is less than or equal to 0.7 and greater than or equal to 0.3; and R is one of Nd, Sm, Eu, Gd and Dy or a combination of more than one of Nd, Sm, Eu, Gd and Dy. The preparation method comprises the following steps: Sr(NO3)2, R(NO3)3.6H2O, La(NO3)3.6H2O and Zr(NO3)4.5H2O which are used as raw materials are mixed according to the molar ratio of (1-x)y:2xy:(1+y):(1-y), wherein x is less than or equal to 0.5 and greater than or equal to 0, y is less than or equal to 0.7 and greater than or equal to 0.3, R is one of Nd, Sm, Eu, Gd and Dy or a combination of more than one of Nd, Sm, Eu, Gd and Dy; a transparent solution is prepared from the above raw materials by using deionized water; under the condition of stirring, the transparent solution is added into a proper amount of diluted ammonia water or an ammonium oxalate solution so as to obtain a suspension; after undergoing ageing, the suspension undergoes suction filtration while repeated washing and precipitation are carried out with deionized water, so as to obtain a filter cake; and the filter cake is dried and calcined to obtain the thermal barrier coating material finished product.
Thermal barrier coating material, thermal barrier coating and preparation method thereof
MA WEN (author) / DONG HONGYING (author) / REN YI (author) / JIN XILONG (author) / LI XIAOYING (author) / XING SHUPEI (author)
2015-07-29
Patent
Electronic Resource
English
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