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High-fracture-toughness thermal barrier coating material of high-entropy rare earth aluminate toughened high-entropy rare earth zirconate as well as preparation method and application of high-fracture-toughness thermal barrier coating material
The invention discloses a high-fracture-toughness thermal barrier coating material of high-entropy rare earth aluminate toughened high-entropy rare earth zirconate and a preparation method of the high-fracture-toughness thermal barrier coating material. The thermal barrier coating material is x [nRE1/nAlO3]-(1-x) [n (RE1/n) 2Zr2O7] (x is more than 0 and less than or equal to 0.5, and n is more than or equal to 5 and less than or equal to 13). The preparation method comprises the following steps: S1, preparing a rare earth source, a zirconium source and an aluminum source according with a stoichiometric ratio into a mixed solution; s2, the mixed solution is added into an ammonia water solution in a stirring state, and the pH value of the system is always kept to be larger than or equal to 10.0; s3, washing and drying a precipitation product obtained in S2; and S4, heat treatment is conducted, and heat treatment is conducted for 2-20 h at the temperature of 950-1600 DEG C. The double-phase high-entropy thermal barrier coating material has good high-temperature phase stability and high fracture toughness, and the fracture toughness of the double-phase high-entropy thermal barrier coating material reaches 1.92 MPa.m < 1/2 > to 2.77 MPa.m < 1/2 >.
本发明公开了一种高熵稀土铝酸盐增韧高熵稀土锆酸盐的高断裂韧性热障涂层材料及其制备方法。热障涂层材料为x[nRE1/nAlO3]‑(1‑x)[n(RE1/n)2Zr2O7](0＜x≤0.5,5≤n≤13)。制备方法如下：S1将符合化学计量比的稀土源、锆源和铝源制成混合溶液；S2将混合溶液在搅拌状态下加入到氨水溶液中并始终保持体系的pH值≥10.0；S3洗涤并烘干S2所得的沉淀产物；S4进行热处理，在温度为950℃～1600℃，热处理2～20h。本发明的双相高熵热障涂层材料具有良好的高温相稳定性和高的断裂韧性，其断裂韧性达到1.92～2.77MPa·m1/2。
High-fracture-toughness thermal barrier coating material of high-entropy rare earth aluminate toughened high-entropy rare earth zirconate as well as preparation method and application of high-fracture-toughness thermal barrier coating material
The invention discloses a high-fracture-toughness thermal barrier coating material of high-entropy rare earth aluminate toughened high-entropy rare earth zirconate and a preparation method of the high-fracture-toughness thermal barrier coating material. The thermal barrier coating material is x [nRE1/nAlO3]-(1-x) [n (RE1/n) 2Zr2O7] (x is more than 0 and less than or equal to 0.5, and n is more than or equal to 5 and less than or equal to 13). The preparation method comprises the following steps: S1, preparing a rare earth source, a zirconium source and an aluminum source according with a stoichiometric ratio into a mixed solution; s2, the mixed solution is added into an ammonia water solution in a stirring state, and the pH value of the system is always kept to be larger than or equal to 10.0; s3, washing and drying a precipitation product obtained in S2; and S4, heat treatment is conducted, and heat treatment is conducted for 2-20 h at the temperature of 950-1600 DEG C. The double-phase high-entropy thermal barrier coating material has good high-temperature phase stability and high fracture toughness, and the fracture toughness of the double-phase high-entropy thermal barrier coating material reaches 1.92 MPa.m < 1/2 > to 2.77 MPa.m < 1/2 >.
本发明公开了一种高熵稀土铝酸盐增韧高熵稀土锆酸盐的高断裂韧性热障涂层材料及其制备方法。热障涂层材料为x[nRE1/nAlO3]‑(1‑x)[n(RE1/n)2Zr2O7](0＜x≤0.5,5≤n≤13)。制备方法如下：S1将符合化学计量比的稀土源、锆源和铝源制成混合溶液；S2将混合溶液在搅拌状态下加入到氨水溶液中并始终保持体系的pH值≥10.0；S3洗涤并烘干S2所得的沉淀产物；S4进行热处理，在温度为950℃～1600℃，热处理2～20h。本发明的双相高熵热障涂层材料具有良好的高温相稳定性和高的断裂韧性，其断裂韧性达到1.92～2.77MPa·m1/2。
High-fracture-toughness thermal barrier coating material of high-entropy rare earth aluminate toughened high-entropy rare earth zirconate as well as preparation method and application of high-fracture-toughness thermal barrier coating material
高熵稀土铝酸盐增韧高熵稀土锆酸盐的高断裂韧性热障涂层材料及其制备方法和应用
JIN HONGYUN (author) / LUO XUEWEI (author) / HOU SHU'EN (author)
2022-05-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2024
| European Patent Office | 2021
| European Patent Office | 2024