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Compact high-entropy rare earth niobate high-temperature ceramic material, preparation method and application
The invention discloses a compact high-entropy rare earth niobate high-temperature ceramic material, a preparation method and application, the high-entropy niobate high-temperature ceramic material is a rare earth niobate oxide system RENbO4, specifically (Sm < 1/5 > Dy < 1/5 > Ho < 1/5 > Er < 1/5 > Yb < 1/5 >) NbO4; (Sm < 1/6 > Dy < 1/6 > Ho < 1/6 > Er < 1/6 > Yb < 1/6 > Lu < 1/6 >) NbO4; (Sm1/7Dy1/7Ho1/7Er1/7Yb1/7Lu1/7Gd1/7) NbO4 or (Sm1/8Dy1/8Ho1/8Er1/8Yb1/8Lu1/8Gd1/8Tm1/8) NbO4, and the density is controlled to be greater than or equal to 97%. The ceramic material is high in thermal expansion coefficient and better in thermal property; the oxygen ion conductivity is low, the high-temperature oxidation resistance is better, the excessive growth of TGO can be inhibited, and the coating is prevented from being separated from a substrate; the activation energy is high, and the high-temperature stability is better. The ceramic material can provide thermal protection for hot-end components in the field of heavy weighing devices such as aero-engines, gas turbines, supersonic aircrafts, warships and vessels, the working temperature is increased, and the service life is prolonged.
本专利申请公开了一种致密高熵稀土铌酸盐高温陶瓷材料、制备方法及应用，所述高熵铌酸盐高温陶瓷材料为稀土铌酸盐氧化物体系RENbO4，具体是(Sm1/5Dy1/5Ho1/5Er1/5Yb1/5)NbO4；(Sm1/6Dy1/6Ho1/6Er1/6Yb1/6Lu1/6)NbO4；(Sm1/7Dy1/7Ho1/7Er1/7Yb1/7Lu1/7Gd1/7)NbO4或(Sm1/8Dy1/8Ho1/8Er1/8Yb1/8Lu1/8Gd1/8Tm1/8)NbO4，并控制致密度≥97%。该陶瓷材料具有热膨胀系数高，热学性能更佳；氧离子电导率低，高温抗氧化能力更佳，可抑制TGO的过度生长，防止涂层与基体脱落剥离；激活能高，高温稳定性更好。该陶瓷材料可为航空发动机、燃气轮机、超音速飞行器、军舰、船舰等大国重器领域的热端部件提供热防护、提高工作温度、延长使用寿命。
Compact high-entropy rare earth niobate high-temperature ceramic material, preparation method and application
The invention discloses a compact high-entropy rare earth niobate high-temperature ceramic material, a preparation method and application, the high-entropy niobate high-temperature ceramic material is a rare earth niobate oxide system RENbO4, specifically (Sm < 1/5 > Dy < 1/5 > Ho < 1/5 > Er < 1/5 > Yb < 1/5 >) NbO4; (Sm < 1/6 > Dy < 1/6 > Ho < 1/6 > Er < 1/6 > Yb < 1/6 > Lu < 1/6 >) NbO4; (Sm1/7Dy1/7Ho1/7Er1/7Yb1/7Lu1/7Gd1/7) NbO4 or (Sm1/8Dy1/8Ho1/8Er1/8Yb1/8Lu1/8Gd1/8Tm1/8) NbO4, and the density is controlled to be greater than or equal to 97%. The ceramic material is high in thermal expansion coefficient and better in thermal property; the oxygen ion conductivity is low, the high-temperature oxidation resistance is better, the excessive growth of TGO can be inhibited, and the coating is prevented from being separated from a substrate; the activation energy is high, and the high-temperature stability is better. The ceramic material can provide thermal protection for hot-end components in the field of heavy weighing devices such as aero-engines, gas turbines, supersonic aircrafts, warships and vessels, the working temperature is increased, and the service life is prolonged.
本专利申请公开了一种致密高熵稀土铌酸盐高温陶瓷材料、制备方法及应用，所述高熵铌酸盐高温陶瓷材料为稀土铌酸盐氧化物体系RENbO4，具体是(Sm1/5Dy1/5Ho1/5Er1/5Yb1/5)NbO4；(Sm1/6Dy1/6Ho1/6Er1/6Yb1/6Lu1/6)NbO4；(Sm1/7Dy1/7Ho1/7Er1/7Yb1/7Lu1/7Gd1/7)NbO4或(Sm1/8Dy1/8Ho1/8Er1/8Yb1/8Lu1/8Gd1/8Tm1/8)NbO4，并控制致密度≥97%。该陶瓷材料具有热膨胀系数高，热学性能更佳；氧离子电导率低，高温抗氧化能力更佳，可抑制TGO的过度生长，防止涂层与基体脱落剥离；激活能高，高温稳定性更好。该陶瓷材料可为航空发动机、燃气轮机、超音速飞行器、军舰、船舰等大国重器领域的热端部件提供热防护、提高工作温度、延长使用寿命。
Compact high-entropy rare earth niobate high-temperature ceramic material, preparation method and application
一种致密高熵稀土铌酸盐高温陶瓷材料、制备方法及应用
ZHONG XIAOYU (Autor:in) / LAI LIPING (Autor:in) / FENG JING (Autor:in) / WANG JUN (Autor:in) / CHEN LIN (Autor:in)
20.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
High-entropy rare earth niobate ceramic coating material and preparation method thereof
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