Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SiC composite coating for porous thermal insulation carbon material and preparation method thereof
The invention provides a SiC composite coating for a porous thermal insulation carbon material and a preparation method of the SiC composite coating. The coating sequentially comprises a carbon sealing and filling layer, a SiC transition layer prepared through a brush coating reaction and a SiC outer coating prepared through a chemical vapor deposition method from inside to outside. According to the invention, the performance of the porous heat-insulating carbon material is ensured, the oxidation protection problem of the porous heat-insulating carbon material is effectively solved, and the high-temperature oxidation resistance of the material can be effectively improved. The structure of the carbon sealing and filling layer can effectively prevent a coating raw material from permeating into the porous carbon felt body, the carbon sealing and filling layer can form pinned interface combination with the porous carbon felt and form firm chemical combination with the SiC transition layerprepared through a brush coating reaction, and the combining capacity of the coating and a porous carbon felt is improved. Besides, the coating preparation process has low requirements on the surfaceof a base material and equipment, is not limited by the shape and the size of the base material, has the advantages of simple equipment process, easiness in operation, capability of preparing large-size and complex-shape special-shaped parts and the like, and has a wide industrial application prospect.
本发明提供了一种多孔隔热炭材料用SiC复合涂层及其制备方法，涂层由内到外依次包括炭封填层，刷涂反应制备的SiC过渡层及化学气相沉积法制备的SiC外涂层。本发明在保证多孔隔热炭材料性能的同时，有效解决了多孔隔热炭材料的氧化防护问题，可有效提升材料的高温抗氧化性能。炭封填层的构造能有效阻挡涂层原料向多孔炭毡体的渗入问题，不但能与多孔炭毡形成钉扎状界面结合，还与刷涂反应制备的SiC过渡层形成了牢固的化学结合，提高了涂层与多孔炭毡的结合能力。此外，本发明涂层制备工艺对基体材料表面和设备要求低，且不受基体形状和尺寸限制，具有设备工艺简单、易操作、可制备大尺寸、形状复杂的异形件等优点，具有广阔的工业化应用前景。
SiC composite coating for porous thermal insulation carbon material and preparation method thereof
The invention provides a SiC composite coating for a porous thermal insulation carbon material and a preparation method of the SiC composite coating. The coating sequentially comprises a carbon sealing and filling layer, a SiC transition layer prepared through a brush coating reaction and a SiC outer coating prepared through a chemical vapor deposition method from inside to outside. According to the invention, the performance of the porous heat-insulating carbon material is ensured, the oxidation protection problem of the porous heat-insulating carbon material is effectively solved, and the high-temperature oxidation resistance of the material can be effectively improved. The structure of the carbon sealing and filling layer can effectively prevent a coating raw material from permeating into the porous carbon felt body, the carbon sealing and filling layer can form pinned interface combination with the porous carbon felt and form firm chemical combination with the SiC transition layerprepared through a brush coating reaction, and the combining capacity of the coating and a porous carbon felt is improved. Besides, the coating preparation process has low requirements on the surfaceof a base material and equipment, is not limited by the shape and the size of the base material, has the advantages of simple equipment process, easiness in operation, capability of preparing large-size and complex-shape special-shaped parts and the like, and has a wide industrial application prospect.
本发明提供了一种多孔隔热炭材料用SiC复合涂层及其制备方法，涂层由内到外依次包括炭封填层，刷涂反应制备的SiC过渡层及化学气相沉积法制备的SiC外涂层。本发明在保证多孔隔热炭材料性能的同时，有效解决了多孔隔热炭材料的氧化防护问题，可有效提升材料的高温抗氧化性能。炭封填层的构造能有效阻挡涂层原料向多孔炭毡体的渗入问题，不但能与多孔炭毡形成钉扎状界面结合，还与刷涂反应制备的SiC过渡层形成了牢固的化学结合，提高了涂层与多孔炭毡的结合能力。此外，本发明涂层制备工艺对基体材料表面和设备要求低，且不受基体形状和尺寸限制，具有设备工艺简单、易操作、可制备大尺寸、形状复杂的异形件等优点，具有广阔的工业化应用前景。
SiC composite coating for porous thermal insulation carbon material and preparation method thereof
一种多孔隔热炭材料用SiC复合涂层及其制备方法
YANG XIN (Autor:in) / WANG YOUFANG (Autor:in) / HUANG QIZHONG (Autor:in) / ZHANG MINGYU (Autor:in) / SU ZHE'AN (Autor:in)
05.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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