Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant antioxidant composite coating and preparation process thereof
The invention provides a preparation process of a high-temperature-resistant antioxidant composite coating, which comprises the following steps: uniformly mixing ammonia borane and ferrocene, sprayingthe mixture on the surface of a C/C matrix, and generating BN whiskers in a high-temperature high-pressure environment; and then introducing PCS into the reaction kettle, and continuously depositinga SiC coating on the surface of the C/C matrix under the conditions of high temperature and high pressure. Meanwhile, the invention further provides an application of the coating obtained through thepreparation process in a C/C matrix material, and the BN whiskers have good high-temperature resistance and play a good bridging role between the SiC coating and the C/C matrix, so that the SiC coating is attached to the surface of the C/C matrix more tightly and is not prone to stripping in a high-temperature oxidation environment. Besides, the SiC coating prepared by the method is simple in process and stable in performance, and the high-temperature resistance and oxidation resistance of the material are improved.
本发明提供了一种耐高温抗氧化复合涂层的制备工艺，是通过将氨硼烷和二茂铁混合均匀后喷涂在C/C基体表面，高温高压环境下生成BN晶须；随后向反应釜中通入PCS，高温高压条件下继续在C/C基体表面沉积一层SiC涂层。同时，还提供了上述制备工艺获得涂层，在C/C基体材料中的应用，本发明中的BN晶须本身具有良好的耐高温性能，在SiC涂层和C/C基体之间起到良好的桥接作用，使得SiC涂层在C/C基体表面附着更紧密，高温氧化环境下也不易发生剥离。另外，采用本发明制备的SiC涂层，工艺简单，性能稳定，提高材料的耐高温、抗氧化性能。
High-temperature-resistant antioxidant composite coating and preparation process thereof
The invention provides a preparation process of a high-temperature-resistant antioxidant composite coating, which comprises the following steps: uniformly mixing ammonia borane and ferrocene, sprayingthe mixture on the surface of a C/C matrix, and generating BN whiskers in a high-temperature high-pressure environment; and then introducing PCS into the reaction kettle, and continuously depositinga SiC coating on the surface of the C/C matrix under the conditions of high temperature and high pressure. Meanwhile, the invention further provides an application of the coating obtained through thepreparation process in a C/C matrix material, and the BN whiskers have good high-temperature resistance and play a good bridging role between the SiC coating and the C/C matrix, so that the SiC coating is attached to the surface of the C/C matrix more tightly and is not prone to stripping in a high-temperature oxidation environment. Besides, the SiC coating prepared by the method is simple in process and stable in performance, and the high-temperature resistance and oxidation resistance of the material are improved.
本发明提供了一种耐高温抗氧化复合涂层的制备工艺，是通过将氨硼烷和二茂铁混合均匀后喷涂在C/C基体表面，高温高压环境下生成BN晶须；随后向反应釜中通入PCS，高温高压条件下继续在C/C基体表面沉积一层SiC涂层。同时，还提供了上述制备工艺获得涂层，在C/C基体材料中的应用，本发明中的BN晶须本身具有良好的耐高温性能，在SiC涂层和C/C基体之间起到良好的桥接作用，使得SiC涂层在C/C基体表面附着更紧密，高温氧化环境下也不易发生剥离。另外，采用本发明制备的SiC涂层，工艺简单，性能稳定，提高材料的耐高温、抗氧化性能。
High-temperature-resistant antioxidant composite coating and preparation process thereof
一种耐高温抗氧化复合涂层及其制备工艺
WU BAOLIN (Autor:in) / HOU ZHENHUA (Autor:in) / WU DI (Autor:in)
05.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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