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A platform for research: civil engineering, architecture and urbanism
Anti-CMAS protective layer for TBCs or EBCs, preparation method of anti-CMAS protective layer and protective structure obtained by anti-CMAS protective layer
The invention relates to an anti-CMAS protective layer for TBCs or EBCs. The anti-CMAS protective layer is a rare earth aluminate compound Re4Al2O9, Re is any one or two of Gd, Tb, Dy and Yb, the thickness of the anti-CMAS protective layer is 10-100 [mu] m, and the porosity of the anti-CMAS protective layer is 0.5%-20%. The invention also relates to a preparation method of the anti-CMAS protective layer. The preparation method comprises the step of preparing the anti-CMAS protective layer on the surface of the TBCs or the EBCs by adopting APS, PS-PVD or SPS. The invention also relates to a protective structure which comprises a matrix layer, TBCs or EBCs and the anti-CMAS protective layer. According to the anti-CMAS protective layer disclosed by the invention, the permeation of molten CMAS can be quickly blocked in a working temperature range of 1200-1650 DEG C, and the ultrahigh-temperature service stability and the thermal cycle life of a thermal barrier coating in a CMAS environment are improved.
本发明涉及一种用于TBCs或EBCs的抗CMAS防护层，其为稀土铝酸盐化合物Re4Al2O9，Re为Gd，Tb，Dy和Yb中任意一种或两种，该抗CMAS防护层的厚度为10‑100μm，该抗CMAS防护层的孔隙率为0.5％‑20％。本发明还涉及上述抗CMAS防护层的制备方法，其包括采用APS、PS‑PVD或SPS在TBCs或EBCs的表面制备抗CMAS防护层。本发明又涉及一种防护结构，其包括基体层、TBCs或EBCs以及上述抗CMAS防护层。根据本发明的抗CMAS防护层，在1200‑1650℃工作温度范围能迅速阻挡熔融CMAS的渗透，提高热障涂层在CMAS环境中的超高温服役稳定性和热循环寿命。
Anti-CMAS protective layer for TBCs or EBCs, preparation method of anti-CMAS protective layer and protective structure obtained by anti-CMAS protective layer
The invention relates to an anti-CMAS protective layer for TBCs or EBCs. The anti-CMAS protective layer is a rare earth aluminate compound Re4Al2O9, Re is any one or two of Gd, Tb, Dy and Yb, the thickness of the anti-CMAS protective layer is 10-100 [mu] m, and the porosity of the anti-CMAS protective layer is 0.5%-20%. The invention also relates to a preparation method of the anti-CMAS protective layer. The preparation method comprises the step of preparing the anti-CMAS protective layer on the surface of the TBCs or the EBCs by adopting APS, PS-PVD or SPS. The invention also relates to a protective structure which comprises a matrix layer, TBCs or EBCs and the anti-CMAS protective layer. According to the anti-CMAS protective layer disclosed by the invention, the permeation of molten CMAS can be quickly blocked in a working temperature range of 1200-1650 DEG C, and the ultrahigh-temperature service stability and the thermal cycle life of a thermal barrier coating in a CMAS environment are improved.
本发明涉及一种用于TBCs或EBCs的抗CMAS防护层，其为稀土铝酸盐化合物Re4Al2O9，Re为Gd，Tb，Dy和Yb中任意一种或两种，该抗CMAS防护层的厚度为10‑100μm，该抗CMAS防护层的孔隙率为0.5％‑20％。本发明还涉及上述抗CMAS防护层的制备方法，其包括采用APS、PS‑PVD或SPS在TBCs或EBCs的表面制备抗CMAS防护层。本发明又涉及一种防护结构，其包括基体层、TBCs或EBCs以及上述抗CMAS防护层。根据本发明的抗CMAS防护层，在1200‑1650℃工作温度范围能迅速阻挡熔融CMAS的渗透，提高热障涂层在CMAS环境中的超高温服役稳定性和热循环寿命。
Anti-CMAS protective layer for TBCs or EBCs, preparation method of anti-CMAS protective layer and protective structure obtained by anti-CMAS protective layer
一种用于TBCs或EBCs的抗CMAS防护层及其制备方法以及由此得到的防护结构
CHEN XIAOLONG (author) / ZHANG XIANCHENG (author) / ZHAO XIAOFENG (author) / SHI JUNMIAO (author) / WANG WEIZE (author) / LIU LIQIANG (author)
2021-12-31
Patent
Electronic Resource
Chinese
CMAS-resisting ceramic layer and slurry method for preparing CMAS-resisting ceramic layer
| European Patent Office | 2015