Magnesium-assisted formation of metal carbides and nitrides from metal oxides

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• 作者：Liangbiao Wang ; Qianwen Li ; Yongchun Zhu ; Yitai Qian ; ^{wlb6641@163.com}
• 关键词：Carbides ; Nitrides ; Solid state reaction ; X-ray diffraction
• 刊名：International Journal of Refractory Metals and Hard Materials
• 出版年：2012
• 出版时间：March 2012
• 年：2012
• 卷：31
• 期：Complete
• 页码：288-292
• 全文大小：929 K

文摘

A series of carbides (TiC, V₂C, Mo₂C) were synthesized by the corresponding metal oxides (TiO₂, V₂O₅, MoO₃), CaC₂ and magnesium as starting materials in a stainless steel autoclave at 600 ¡ãC. Through similar processes, transition metal nitrides (TiN, VN and CrN) could also be produced by employing the corresponding metal oxides (TiO₂, V₂O₅, Cr₂O₃), NaNH₂, and magnesium as starting materials at 550 ¡ãC. The FE-SEM image showed that the TiC sample was mainly consisted of flower-like microstructures. TEM image showed the other carbides (V2C, Mo2C) and the obtained nitride (TiN, VN, CrN) were consisted of nanoparticles. The possible synthesis mechanism of TiC had been described.