以碳纳米管为模板在熔盐介质中制备碳化钽（英文）

发布时间：2018-03-03 19:14

本文选题：碳纳米管　切入点：碳化钽　出处：《新型炭材料》2017年03期 　论文类型：期刊论文

【摘要】：以不同结构的碳纳米管为反应模板,在KCl-Li Cl混合盐体系中,利用熔盐反应成功制备了碳化钽纳米纤维和碳化钽涂层,并对反应产物和相应的碳管模板分别进行了SEM、TEM、XRD和SAED表征。结果表明,碳管的晶体结构对碳化钽涂层的形成具有显著地影响,经高温处理后碳管的晶体结构趋于完整,但反应性变差。通过控制金属钽和碳管的摩尔比可以选择性地得到碳化钽纳米纤维和碳化钽涂层,且产物的形貌与它们的碳管前驱体类似。同时,反应时间和反应温度对碳化钽的形成有较大影响。
[Abstract]:Tantalum carbide nanofibers and tantalum carbide coatings were successfully prepared by molten salt reaction in KCl-Li Cl mixed salt system using carbon nanotubes with different structures as reaction templates. The reaction products and the corresponding carbon tube templates were characterized by SEM-TEMX and SAED, respectively. The results show that the crystal structure of the carbon tube has a significant effect on the formation of tantalum carbide coating, and the crystal structure of the carbon tube tends to be complete after high temperature treatment. By controlling the molar ratio of metal tantalum to carbon tube, tantalum carbide nanofibers and tantalum carbide coatings can be obtained selectively, and the morphology of the products is similar to that of their carbon tube precursors. The reaction time and reaction temperature have great influence on the formation of tantalum carbide.
【作者单位】：武汉科技大学省部共建耐火材料与冶金国家重点实验室;武汉科技大学煤转化与新型炭材料湖北省重点实验室;
【基金】：National Natural Science Foundation of China(50972110,51472186) Hubei Provincial Natural Science Foundation of China(2009CDA036) Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry~~
【分类号】：TQ135.13

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