Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Graphite-based composite material with environmental thermal barrier coating MTaO4 and preparation method of graphite-based composite material
The invention relates to the technical field of composite materials, and particularly discloses a graphite-based composite material with an environmental thermal barrier coating MTaO4 and a preparation method of the graphite-based composite material. The method comprises steps: monocrystalline silicon, aluminum oxide, aluminum hydroxide, aluminum dihydrogen phosphate and calcium oxide are weighed,subjected to ball milling together with absolute ethyl alcohol, evenly mixed and then put into a drying oven together with a graphite substrate to be soaked at the constant temperature; calcining iscarried out after drying to form a transition layer on the surface of the graphite substrate; and MTaO4 powder is sprayed to the surface of the transition layer by adopting an atmospheric plasma spraying method to form the graphite-based composite material of which the surface is sprayed with the MTaO4 ceramic coating layer. The thermal conductivity of the obtained graphite-based composite material is 0.60-0.83 W.m < -1 >. K < -1 >, the graphite-based composite material meets the use environment of ultra-high temperature (2000 DEG C) or above, the bonding strength of the coating layer and thesubstrate is enhanced through preparation of the transition layer, the mechanical property of the coating layer is improved, and the service life of the coating layer is prolonged.
本发明涉及复合材料技术领域，具体公开了具有环境热障涂层MTaO4的石墨基复合材料及其制备方法，称取单晶硅、氧化铝、氢氧化铝、磷酸二氢铝和氧化钙，与无水乙醇一起进行球磨，混合均匀后与石墨基体一起放入烘箱中恒温浸泡，待干燥后进行煅烧，使石墨基体表面形成过渡层；采用大气等离子喷涂的方法将MTaO4粉末喷涂到过渡层表面，形成表面喷涂有MTaO4陶瓷涂层的石墨基复合材料。本发明得到的石墨基复合材料热导率在0.60～0.83W·m‑1·K‑1之间，满足超高温(2000℃)以上的使用环境，过渡层的制备加强了涂层与基体的结合强度，提高了涂层的力学性能和使用寿命。
Graphite-based composite material with environmental thermal barrier coating MTaO4 and preparation method of graphite-based composite material
The invention relates to the technical field of composite materials, and particularly discloses a graphite-based composite material with an environmental thermal barrier coating MTaO4 and a preparation method of the graphite-based composite material. The method comprises steps: monocrystalline silicon, aluminum oxide, aluminum hydroxide, aluminum dihydrogen phosphate and calcium oxide are weighed,subjected to ball milling together with absolute ethyl alcohol, evenly mixed and then put into a drying oven together with a graphite substrate to be soaked at the constant temperature; calcining iscarried out after drying to form a transition layer on the surface of the graphite substrate; and MTaO4 powder is sprayed to the surface of the transition layer by adopting an atmospheric plasma spraying method to form the graphite-based composite material of which the surface is sprayed with the MTaO4 ceramic coating layer. The thermal conductivity of the obtained graphite-based composite material is 0.60-0.83 W.m < -1 >. K < -1 >, the graphite-based composite material meets the use environment of ultra-high temperature (2000 DEG C) or above, the bonding strength of the coating layer and thesubstrate is enhanced through preparation of the transition layer, the mechanical property of the coating layer is improved, and the service life of the coating layer is prolonged.
本发明涉及复合材料技术领域，具体公开了具有环境热障涂层MTaO4的石墨基复合材料及其制备方法，称取单晶硅、氧化铝、氢氧化铝、磷酸二氢铝和氧化钙，与无水乙醇一起进行球磨，混合均匀后与石墨基体一起放入烘箱中恒温浸泡，待干燥后进行煅烧，使石墨基体表面形成过渡层；采用大气等离子喷涂的方法将MTaO4粉末喷涂到过渡层表面，形成表面喷涂有MTaO4陶瓷涂层的石墨基复合材料。本发明得到的石墨基复合材料热导率在0.60～0.83W·m‑1·K‑1之间，满足超高温(2000℃)以上的使用环境，过渡层的制备加强了涂层与基体的结合强度，提高了涂层的力学性能和使用寿命。
Graphite-based composite material with environmental thermal barrier coating MTaO4 and preparation method of graphite-based composite material
具有环境热障涂层MTaO4的石墨基复合材料及其制备方法
WANG FENG (Autor:in) / WANG JUN (Autor:in) / LI JIANYU (Autor:in) / LI ZHENJUN (Autor:in) / FENG JING (Autor:in)
29.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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