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Ln1-xSrxMg1-yMnyAl11-zTizO19 nano-ceramic thermal barrier coating material and preparation method thereof
The present invention discloses a Ln1-xSrxMg1-yMnyAl11-zTizO19 nano-ceramic thermal barrier coating material and a preparation method thereof, belongs to the technical field of new materials, the material formula is Ln1-xSrxMg1-yMnyAl11-zTizO19 (x is greater than 0 and less than or equal to 0.5, y is greater than 0 and less than or equal to 0.5, and z is greater than 0 and less than or equal to 0.5), and Ln is one or a combination of any of La, Pr, Nd, Sm, Eu, Gd, Er and Yb. Citrate sol - gel process is used, the prepared ceramic material shows plate planar micromorphology, the average grain size is 74-85nm, compared with widely used 7-8wt% yttria-stabilized zirconia (YSZ), the material has low thermal conductivity and high thermal expansion coefficient, solves the problems of serious sintering phase change failure, alloy matrix thermal mismatch, serious high temperature heat radiation and the like of high temperature ceramic thermal barrier coating material in the prior art, the material can be designed into a thermal barrier coating material, and the use temperature range is from room temperature to 2023K.
Ln1-xSrxMg1-yMnyAl11-zTizO19 nano-ceramic thermal barrier coating material and preparation method thereof
The present invention discloses a Ln1-xSrxMg1-yMnyAl11-zTizO19 nano-ceramic thermal barrier coating material and a preparation method thereof, belongs to the technical field of new materials, the material formula is Ln1-xSrxMg1-yMnyAl11-zTizO19 (x is greater than 0 and less than or equal to 0.5, y is greater than 0 and less than or equal to 0.5, and z is greater than 0 and less than or equal to 0.5), and Ln is one or a combination of any of La, Pr, Nd, Sm, Eu, Gd, Er and Yb. Citrate sol - gel process is used, the prepared ceramic material shows plate planar micromorphology, the average grain size is 74-85nm, compared with widely used 7-8wt% yttria-stabilized zirconia (YSZ), the material has low thermal conductivity and high thermal expansion coefficient, solves the problems of serious sintering phase change failure, alloy matrix thermal mismatch, serious high temperature heat radiation and the like of high temperature ceramic thermal barrier coating material in the prior art, the material can be designed into a thermal barrier coating material, and the use temperature range is from room temperature to 2023K.
Ln1-xSrxMg1-yMnyAl11-zTizO19 nano-ceramic thermal barrier coating material and preparation method thereof
ZHU JUN (Autor:in) / WANG HUIYU (Autor:in) / CUI HENGYANG (Autor:in) / ZHU HUI (Autor:in) / ZHU WEIGUO (Autor:in)
09.12.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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