Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Environmental barrier coating resistant to water and oxygen corrosion, preparation method and application of environmental barrier coating
The invention provides an environmental barrier coating resistant to water and oxygen corrosion as well as a preparation method and application of the environmental barrier coating, the environmental barrier coating prepared by adopting a plasma spraying-physical vapor deposition technology and a vacuum annealing technology sequentially comprises a matrix layer, a Si-HfO2 bonding layer, a Yb2Si2O7 middle layer and a (Yb1-xLux) 2SiO5 surface layer from bottom to top, and the range of x in the (Yb1-xLux) 2SiO5 surface layer is 0.1-0.3. The Si-HfO2 bonding layer has excellent high-temperature performance while providing good bonding force, the Yb2Si2O7 middle layer relieves the problem that thermal expansion coefficients of the coating and a base body are not matched, the cracking and peeling phenomena of the coating are reduced, the (Yb1-xLux) 2SiO5 layer has excellent water and oxygen corrosion resistance, and the service life of the coating is prolonged. The composite coating prepared through plasma spraying-physical vapor deposition and vacuum annealing is good in combination and high in coating density, it can be guaranteed that a SiC/SiC composite material is prevented from being corroded by water and oxygen in a severe high-temperature fuel gas environment, and the composite coating serves stably as a hot end component of an aero-engine.
本发明提供一种抗水氧腐蚀的环境障涂层、制备方法及其应用，采用等离子喷涂‑物理气相沉积技术以及真空退火技术制备的环境障涂层，从下至上依次包括基体层、Si‑HfO2粘结层、Yb2Si2O7中间层和(Yb1‑xLux)2SiO5面层，(Yb1‑xLux)2SiO5面层中x的范围为0.1‑0.3。本发明Si‑HfO2粘结层在提供良好结合力的同时具有优异的高温性能，Yb2Si2O7中间层缓解了涂层与基体间的热膨胀系数不匹配问题，减少涂层开裂及剥落现象，(Yb1‑xLux)2SiO5层具备优异的抗水氧腐蚀性能，采用等离子喷涂‑物理气相沉积以及真空退火制备的该复合涂层结合良好，涂层致密度高，能够保障SiC/SiC复合材料免受苛刻高温燃气环境中的水氧腐蚀，使其作为航空发动机热端部件稳定服役。
Environmental barrier coating resistant to water and oxygen corrosion, preparation method and application of environmental barrier coating
The invention provides an environmental barrier coating resistant to water and oxygen corrosion as well as a preparation method and application of the environmental barrier coating, the environmental barrier coating prepared by adopting a plasma spraying-physical vapor deposition technology and a vacuum annealing technology sequentially comprises a matrix layer, a Si-HfO2 bonding layer, a Yb2Si2O7 middle layer and a (Yb1-xLux) 2SiO5 surface layer from bottom to top, and the range of x in the (Yb1-xLux) 2SiO5 surface layer is 0.1-0.3. The Si-HfO2 bonding layer has excellent high-temperature performance while providing good bonding force, the Yb2Si2O7 middle layer relieves the problem that thermal expansion coefficients of the coating and a base body are not matched, the cracking and peeling phenomena of the coating are reduced, the (Yb1-xLux) 2SiO5 layer has excellent water and oxygen corrosion resistance, and the service life of the coating is prolonged. The composite coating prepared through plasma spraying-physical vapor deposition and vacuum annealing is good in combination and high in coating density, it can be guaranteed that a SiC/SiC composite material is prevented from being corroded by water and oxygen in a severe high-temperature fuel gas environment, and the composite coating serves stably as a hot end component of an aero-engine.
本发明提供一种抗水氧腐蚀的环境障涂层、制备方法及其应用，采用等离子喷涂‑物理气相沉积技术以及真空退火技术制备的环境障涂层，从下至上依次包括基体层、Si‑HfO2粘结层、Yb2Si2O7中间层和(Yb1‑xLux)2SiO5面层，(Yb1‑xLux)2SiO5面层中x的范围为0.1‑0.3。本发明Si‑HfO2粘结层在提供良好结合力的同时具有优异的高温性能，Yb2Si2O7中间层缓解了涂层与基体间的热膨胀系数不匹配问题，减少涂层开裂及剥落现象，(Yb1‑xLux)2SiO5层具备优异的抗水氧腐蚀性能，采用等离子喷涂‑物理气相沉积以及真空退火制备的该复合涂层结合良好，涂层致密度高，能够保障SiC/SiC复合材料免受苛刻高温燃气环境中的水氧腐蚀，使其作为航空发动机热端部件稳定服役。
Environmental barrier coating resistant to water and oxygen corrosion, preparation method and application of environmental barrier coating
一种抗水氧腐蚀的环境障涂层、制备方法及其应用
LIANG WENPING (Autor:in) / LIU RUIXIANG (Autor:in) / MIAO QIANG (Autor:in) / ZHAO HUI (Autor:in) / WU MIN (Autor:in) / ZHANG MENG (Autor:in) / YAN RONGXUE (Autor:in) / TAN XIAOQI (Autor:in) / LIU QIJIA (Autor:in)
24.09.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024