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A platform for research: civil engineering, architecture and urbanism
High-entropy rare earth aluminate-high-entropy rare earth zirconate composite thermal barrier coating material as well as preparation method and application thereof
The invention relates to a high-entropy rare earth aluminate-high-entropy rare earth zirconate composite thermal barrier coating material as well as a preparation method and application thereof. The material of the thermal barrier coating is xREAlO3-(1-x) RE2Zr2O7. The 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, slowly adding the mixed solution into an ammonia water solution on the premise of continuously stirring, and always regulating and controlling the pH value of an ammonia water precipitate system to be greater than or equal to 10.0; s3, washing and drying a co-precipitation product obtained in S2; s4, performing heat treatment for at least 3 h under the condition that the temperature is 1000 +/-50 DEG C; and S5, increasing the temperature to 1150-1550 DEG C, and performing heat treatment for 4-200 h. The coating material disclosed by the invention has good high-temperature phase stability, good sintering resistance, extremely low thermal conductivity, relatively high thermal expansibility and relatively high fracture toughness.
本发明包括一种高熵稀土铝酸盐‑高熵稀土锆酸盐复合热障涂层材料及其制备方法和应用。热障涂层材料为xREAlO3‑(1‑x)RE2Zr2O7。方法包括如下步骤：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将混合溶液在不断搅拌的前提下缓慢加入到氨水溶液中并始终调控氨水沉淀物体系的pH值≥10.0；S3洗涤并烘干S2所得的共沉淀产物；S4进行热处理，在温度为1000℃±50℃的条件下，热处理至少3h；S5将温度升温至1150℃～1550℃，热处理4～200h。本发明的涂层材料具有良好的高温相稳定性、良好的抗烧结性、极低的热导率、较高的热膨胀性和较高的断裂韧性。
High-entropy rare earth aluminate-high-entropy rare earth zirconate composite thermal barrier coating material as well as preparation method and application thereof
The invention relates to a high-entropy rare earth aluminate-high-entropy rare earth zirconate composite thermal barrier coating material as well as a preparation method and application thereof. The material of the thermal barrier coating is xREAlO3-(1-x) RE2Zr2O7. The 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, slowly adding the mixed solution into an ammonia water solution on the premise of continuously stirring, and always regulating and controlling the pH value of an ammonia water precipitate system to be greater than or equal to 10.0; s3, washing and drying a co-precipitation product obtained in S2; s4, performing heat treatment for at least 3 h under the condition that the temperature is 1000 +/-50 DEG C; and S5, increasing the temperature to 1150-1550 DEG C, and performing heat treatment for 4-200 h. The coating material disclosed by the invention has good high-temperature phase stability, good sintering resistance, extremely low thermal conductivity, relatively high thermal expansibility and relatively high fracture toughness.
本发明包括一种高熵稀土铝酸盐‑高熵稀土锆酸盐复合热障涂层材料及其制备方法和应用。热障涂层材料为xREAlO3‑(1‑x)RE2Zr2O7。方法包括如下步骤：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将混合溶液在不断搅拌的前提下缓慢加入到氨水溶液中并始终调控氨水沉淀物体系的pH值≥10.0；S3洗涤并烘干S2所得的共沉淀产物；S4进行热处理，在温度为1000℃±50℃的条件下，热处理至少3h；S5将温度升温至1150℃～1550℃，热处理4～200h。本发明的涂层材料具有良好的高温相稳定性、良好的抗烧结性、极低的热导率、较高的热膨胀性和较高的断裂韧性。
High-entropy rare earth aluminate-high-entropy rare earth zirconate composite thermal barrier coating material as well as preparation method and application thereof
高熵稀土铝酸盐-高熵稀土锆酸盐复合热障涂层材料及其制备方法和应用
LUO LIRONG (author) / LUO XUEWEI (author) / DUAN SHUAISHUAI (author) / JIN HONGYUN (author) / HOU SHU'EN (author)
2021-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
| European Patent Office | 2021
| European Patent Office | 2024