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Method for repairing graphite base with SiC coating on surface
The invention provides a method for repairing a graphite base with a SiC coating on the surface, which comprises the following steps: filling a damaged part of the graphite base with the SiC coating on the surface with liquid polycarbosilane and/or a polycarbosilane solution, heating in an inert atmosphere, pyrolyzing and converting polycarbosilane into SiC ceramic, and repairing the SiC ceramic on the surface of the graphite base with the SiC coating on the surface of the graphite base with the SiC coating on the surface of the graphite base. The SiC protective coating is formed on the surface of the graphite base, and SiC in gradient distribution is formed in graphite, so that the binding force with the graphite is greatly enhanced, the compactness of the graphite base is improved, and the service life of the graphite base containing the SiC coating is prolonged.
本发明提供一种表面含SiC涂层的石墨基座的修补方法，利用液态聚碳硅烷和/或者聚碳硅烷溶液填补表面含SiC涂层的石墨基座的受损处，其中一部分聚碳硅烷渗透进入石墨内部，然后在惰性气氛中加热，聚碳硅烷热解转化为SiC陶瓷，不仅在石墨基座表面形成SiC保护涂层，而且在石墨内部形成梯度分布的SiC，大大强化了与石墨的结合力，还提高了石墨基座的致密性，延长了含SiC涂层石墨基座使用寿命。
Method for repairing graphite base with SiC coating on surface
The invention provides a method for repairing a graphite base with a SiC coating on the surface, which comprises the following steps: filling a damaged part of the graphite base with the SiC coating on the surface with liquid polycarbosilane and/or a polycarbosilane solution, heating in an inert atmosphere, pyrolyzing and converting polycarbosilane into SiC ceramic, and repairing the SiC ceramic on the surface of the graphite base with the SiC coating on the surface of the graphite base with the SiC coating on the surface of the graphite base. The SiC protective coating is formed on the surface of the graphite base, and SiC in gradient distribution is formed in graphite, so that the binding force with the graphite is greatly enhanced, the compactness of the graphite base is improved, and the service life of the graphite base containing the SiC coating is prolonged.
本发明提供一种表面含SiC涂层的石墨基座的修补方法，利用液态聚碳硅烷和/或者聚碳硅烷溶液填补表面含SiC涂层的石墨基座的受损处，其中一部分聚碳硅烷渗透进入石墨内部，然后在惰性气氛中加热，聚碳硅烷热解转化为SiC陶瓷，不仅在石墨基座表面形成SiC保护涂层，而且在石墨内部形成梯度分布的SiC，大大强化了与石墨的结合力，还提高了石墨基座的致密性，延长了含SiC涂层石墨基座使用寿命。
Method for repairing graphite base with SiC coating on surface
一种表面含SiC涂层的石墨基座的修补方法
XUE YUNZHOU (author) / CAO TINGHUA (author) / HE SHAOLONG (author)
2024-09-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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