Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lutetium silicate ceramic material and method for improving high-temperature water vapor corrosion resistance of lutetium silicate ceramic
The invention belongs to the field of inorganic materials, particularly relates to a lutetium silicate ceramic material and a method for improving the high-temperature water vapor corrosion resistance of the lutetium silicate ceramic material, and is suitable for performance optimization, development and application of a rare earth silicate material for an environmental barrier coating. The method comprises the following steps: (1) controlling the content of a solvent atom Ho in Lu2SiO5 according to a stoichiometric ratio; (2) the wetting angle of the Lu2SiO5 ceramic material is increased from 80.1 +/-0.5 degrees to 87.5 +/-0.6 degrees; and (3) the weight loss of the material is reduced from 0.221 mg/cm < 2 > to 0.0911 mg/cm < 2 > after the material is corroded for 30 hours under the water vapor environment conditions of 1000-1400 DEG C and 30% of H2O and 70% of O2. Component design is carried out on Lu2SiO5 through specific rare earth element doping, the proportion of the doped rare earth element in the Lu2SiO5 is optimized, and the corrosion resistance of the Lu2SiO5 material in the high-temperature water vapor environment can be remarkably improved. Meanwhile, the wetting angle of the Lu2SiO5 material subjected to rare earth atom solid solution doping is increased, the hydrophobic performance is improved, and important support is provided for optimizing the high-temperature water vapor corrosion resistance of the Lu2SiO5 material.
本发明属于无机材料领域，具体为一种硅酸镥陶瓷材料以及改善硅酸镥材料高温抗水汽腐蚀效能的方法，适用于面向环境障涂层用稀土硅酸盐材料的性能优化与开发应用。方法包括：(1)按照化学计量比控制Lu2SiO5中溶剂原子Ho含量；(2)Lu2SiO5陶瓷材料的润湿角从80.1±0.5°增加到87.5±0.6°；(3)在1000‑1400℃，30％H2O‑70％O2的水汽环境条件下腐蚀30h后材料的失重由0.221mg/cm2降低到0.0911mg/cm2。本发明通过特定稀土元素掺杂对Lu2SiO5进行组分设计，优化掺杂稀土元素在Lu2SiO5中的占比，可以显著提高Lu2SiO5材料在高温水汽环境中的耐腐蚀性能。同时，经稀土原子固溶掺杂后Lu2SiO5材料的润湿角增大，疏水性能得到提高，这也为优化其高温耐水汽腐蚀性能提供了重要支撑。
Lutetium silicate ceramic material and method for improving high-temperature water vapor corrosion resistance of lutetium silicate ceramic
The invention belongs to the field of inorganic materials, particularly relates to a lutetium silicate ceramic material and a method for improving the high-temperature water vapor corrosion resistance of the lutetium silicate ceramic material, and is suitable for performance optimization, development and application of a rare earth silicate material for an environmental barrier coating. The method comprises the following steps: (1) controlling the content of a solvent atom Ho in Lu2SiO5 according to a stoichiometric ratio; (2) the wetting angle of the Lu2SiO5 ceramic material is increased from 80.1 +/-0.5 degrees to 87.5 +/-0.6 degrees; and (3) the weight loss of the material is reduced from 0.221 mg/cm < 2 > to 0.0911 mg/cm < 2 > after the material is corroded for 30 hours under the water vapor environment conditions of 1000-1400 DEG C and 30% of H2O and 70% of O2. Component design is carried out on Lu2SiO5 through specific rare earth element doping, the proportion of the doped rare earth element in the Lu2SiO5 is optimized, and the corrosion resistance of the Lu2SiO5 material in the high-temperature water vapor environment can be remarkably improved. Meanwhile, the wetting angle of the Lu2SiO5 material subjected to rare earth atom solid solution doping is increased, the hydrophobic performance is improved, and important support is provided for optimizing the high-temperature water vapor corrosion resistance of the Lu2SiO5 material.
本发明属于无机材料领域，具体为一种硅酸镥陶瓷材料以及改善硅酸镥材料高温抗水汽腐蚀效能的方法，适用于面向环境障涂层用稀土硅酸盐材料的性能优化与开发应用。方法包括：(1)按照化学计量比控制Lu2SiO5中溶剂原子Ho含量；(2)Lu2SiO5陶瓷材料的润湿角从80.1±0.5°增加到87.5±0.6°；(3)在1000‑1400℃，30％H2O‑70％O2的水汽环境条件下腐蚀30h后材料的失重由0.221mg/cm2降低到0.0911mg/cm2。本发明通过特定稀土元素掺杂对Lu2SiO5进行组分设计，优化掺杂稀土元素在Lu2SiO5中的占比，可以显著提高Lu2SiO5材料在高温水汽环境中的耐腐蚀性能。同时，经稀土原子固溶掺杂后Lu2SiO5材料的润湿角增大，疏水性能得到提高，这也为优化其高温耐水汽腐蚀性能提供了重要支撑。
Lutetium silicate ceramic material and method for improving high-temperature water vapor corrosion resistance of lutetium silicate ceramic
硅酸镥陶瓷材料和改善硅酸镥陶瓷高温抗水汽腐蚀效能的方法
SHI YING (Autor:in) / ZHANG XUE (Autor:in) / XIE JIANJUN (Autor:in) / FAN LINGCONG (Autor:in) / LEI FANG (Autor:in) / ZHANG LEI (Autor:in)
05.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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