微波碳热还原法制备氮化铝粉末的工艺研究

采用微波碳热还原法制备了氮化铝粉末，研究了铝源、碳源和添加剂对制备氮化铝粉末的影响. 通过对所合成的产物进行XRD检测分析表明，氢氧化铝和乙炔黑是最合适的铝源和碳源、单质添加剂的氮化催化效果最明显. 以氢氧化铝和乙炔黑为原料，加入单质添加剂，在氮气气氛下反应温度为1300℃、反应时间为1h时能获得完全氮化的氮化铝粉末，可见微波碳热还原工艺能够大大降低碳热还原法制备氮化铝粉末的反应温度，并缩短反应时间.

Preparation of AlN Powder by Microwave Carbon Thermal Reduction

Aluminium nitride powders were prepared by microwave carbon thermal reduction method. The effects of aluminium sources, carbon sources and additives on AlN powder structure and morphology were studied. XRD analysis shows that most suitable aluminum source and carbon source are selected to be as aluminum hydroxide and acetylene black, respectively. The catalysis effect of additive A on nitridation is most obvious. Industry aluminum hydroxide and acetylene black are completely converted into AlN by adding additive A and heating at 1300℃ for 1h in nitrogen atmosphere. The results show that microwave carbon thermal reduction can reduce the reaction temperate and shortened the reaction time for the preparation of nitride powder.