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

作者：Wang Liangbiao; Li Qianwen; Zhu Yongchun^*; Qian Yitai

来源：International Journal of Refractory Metals and Hard Materials, 2012, 31: 288-292.

DOI：10.1016/j.ijrmhm.2011.10.009

• Carbides
• Nitrides
• Solid state reaction
• X-ray diffraction

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 degrees C. 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 degrees C. 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.

• 出版日期2012-3
• 单位中国科学技术大学