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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。
The effects of carbon content, synthesis temperature and holding time on the microstructure and phase composition of Mo_2 C powder were investigated by XRD, FESEM and other characterization methods. The results show that the particle size of the ultrafine Mo_2C powder prepared with the carbon content of 150% (mass fraction), the synthesis temperature of 1 150 ℃ and the holding time of 2.0 h is about 100-500 nm.