Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Antioxidative ZrB2-SiC-Y2O3 coating on surface of C-C composite material and preparation method thereof
The invention discloses an antioxidative ZrB2-SiC-Y2O3 coating on the surface of a C-C composite material and a preparation method thereof. The preparation method comprises the following steps: preparing thermally-spraying spherical agglomerated powder by virtue of a spray granulation technology; and then preparing the ZrB2-SiC-Y2O3 multi-element composite coating by virtue of an atmospheric plasma spraying technology. According to the invention, the rare earth oxide Y2O3 is introduced into ZrB2-SiC ceramic powder, so the effects of enhancing ZrO2-phase stability and inhibiting phase change are achieved, and the oxidation ablation resistance of the coating can be improved. The ZrB2-SiC-Y2O3 composite coating is prepared by adopting the atmospheric plasma spraying technology, so thermal damage to a C/C composite material matrix is small, and the thickness of the coating is controllable. The coating system forms yttrium silicate with low oxygen diffusivity under the condition of oxidation at 1450 DEG C, can effectively inhibit the volatilization of a SiO2 glass phase, and has a certain self-healing effect.
本发明公开了一种C‑C复合材料表面抗氧化ZrB‑SiC‑YO涂层及其制备方法。首先通过喷雾造粒技术制备出热喷涂球形团聚粉末，再采用大气等离子喷涂技术制备ZrB‑SiC‑YO多元复合涂层。在ZrB‑SiC陶瓷粉末中引入稀土氧化物YO起到增强ZrO相稳定性、抑制相变的作用，并且可以提高涂层抗氧化烧蚀性能。本发明采用大气等离子喷涂技术制备ZrB‑SiC‑YO复合涂层，对C/C复合材料基体热损伤小、涂层厚度可控。该涂层体系在1450℃氧化条件下形成具有较低氧扩散率的钇硅酸盐，可有效抑制SiO玻璃相的挥发，并具有一定的自愈合效果。
Antioxidative ZrB2-SiC-Y2O3 coating on surface of C-C composite material and preparation method thereof
The invention discloses an antioxidative ZrB2-SiC-Y2O3 coating on the surface of a C-C composite material and a preparation method thereof. The preparation method comprises the following steps: preparing thermally-spraying spherical agglomerated powder by virtue of a spray granulation technology; and then preparing the ZrB2-SiC-Y2O3 multi-element composite coating by virtue of an atmospheric plasma spraying technology. According to the invention, the rare earth oxide Y2O3 is introduced into ZrB2-SiC ceramic powder, so the effects of enhancing ZrO2-phase stability and inhibiting phase change are achieved, and the oxidation ablation resistance of the coating can be improved. The ZrB2-SiC-Y2O3 composite coating is prepared by adopting the atmospheric plasma spraying technology, so thermal damage to a C/C composite material matrix is small, and the thickness of the coating is controllable. The coating system forms yttrium silicate with low oxygen diffusivity under the condition of oxidation at 1450 DEG C, can effectively inhibit the volatilization of a SiO2 glass phase, and has a certain self-healing effect.
本发明公开了一种C‑C复合材料表面抗氧化ZrB‑SiC‑YO涂层及其制备方法。首先通过喷雾造粒技术制备出热喷涂球形团聚粉末，再采用大气等离子喷涂技术制备ZrB‑SiC‑YO多元复合涂层。在ZrB‑SiC陶瓷粉末中引入稀土氧化物YO起到增强ZrO相稳定性、抑制相变的作用，并且可以提高涂层抗氧化烧蚀性能。本发明采用大气等离子喷涂技术制备ZrB‑SiC‑YO复合涂层，对C/C复合材料基体热损伤小、涂层厚度可控。该涂层体系在1450℃氧化条件下形成具有较低氧扩散率的钇硅酸盐，可有效抑制SiO玻璃相的挥发，并具有一定的自愈合效果。
Antioxidative ZrB2-SiC-Y2O3 coating on surface of C-C composite material and preparation method thereof
C-C复合材料表面抗氧化ZrB-SiC-YO涂层及其制备方法
MIAO QIANG (Autor:in) / LI YANG (Autor:in) / LIANG WENPING (Autor:in) / LIN HAO (Autor:in) / HUANG CHAOJUN (Autor:in) / LIU RUIXIANG (Autor:in) / MA HANCHUN (Autor:in) / SUN ZIWANG (Autor:in) / ZHAO ZILONG (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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