“前驱体+真空碳热还原”法制备超细Mo_2C粉末的研究

Study on synthesis of Mo_2C ultrafine powders by “precursor plus vaccum carbothermal reduction” method

利用"前驱体+真空碳热还原"法制备了超细Mo_2C粉末,采用XRD、FESEM等表征手段研究配碳量、合成温度以及保温时间对Mo_2C粉末微观形貌和物相组成的影响。结果表明:在配碳量为150%(质量分数)、合成温度1 150℃、保温2.0 h条件下制备的超细Mo_2C粉末,粒径约为100~500 nm。

Mo_2C powders were prepared by the method of precursor plus vaccum carbothermal reduction. XRD and FESEM were used to investigate the effects of carbon content,synthesis temperature and holding time on the microstructure and phase composition of synthesized powders. The results show that Mo_2C ultrafine powders with particle size of 100-500 nm is prepared when the carbon content is 150%（mass percent）at 1 150 ℃ for 2.0 h.