Preparation of a titanium carbide coating on carbon fibre using a molten salt method
Preparation of a titanium carbide coating on carbon fibre using a molten salt method
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DOI：
10.1016/j.carbon.2007.11.020
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发表时间：
2008-02
期刊：
影响因子：
10.9
通讯作者：
Xuanke Li;Z. Dong;A. Westwood;A. Brown;Shaowei Zhang;R. Brydson;Nan Li;B. Rand
中科院分区：
文献类型：
--
作者：
Xuanke Li;Z. Dong;A. Westwood;A. Brown;Shaowei Zhang;R. Brydson;Nan Li;B. Rand
研究了一种用熔盐法在碳纤维表面制备碳化钛防护涂层的方法。在900℃和950℃的氩气气氛下，以钛粉和熔融LiCl-KCl-KF盐的混合物为反应介质，在碳纤维表面形成TiC涂层。采用XRD、SEM和能量色散x射线（EDX）分析表征了TiC涂层的结构和形貌。涂层由均匀的单相立方TiC组成，厚度在60-800nm之间。合成时间和反应混合物的变化对TiC涂层的厚度和完整性有显著影响，而反应温度的变化对TiC涂层的厚度和完整性影响不大。涂层厚度与熔盐的组成和碳纤维与钛的摩尔比密切相关。
A method for preparing protective titanium carbide (TiC) coatings on carbon fibres has been developed using a molten salt synthesis method. The TiC coatings were formed on the surface of carbon fibres in a reaction medium consisting of Ti powder in a mixture of molten LiCl–KCl–KF salts under an argon atmosphere at 900 and 950°C. The structure and morphology of the TiC coatings were characterized by XRD, SEM and energy dispersive X-ray (EDX) analyses. The coatings consisted of homogeneous single phase cubic TiC with thicknesses in the range of 60–800nm. Variation of the synthesis time and reaction mixture was found to significantly affect the thickness and integrity of the TiC coating although variation of the reaction temperature had little effect. The coating thickness was closely related to the composition of the molten salts and to the molar ratio between the carbon fibre and titanium.