【作者】 张雄飞； 谢刚； 杨道武； 王成峰；

【Author】 Zhang Xiongfei, Xie Gang, Yang Daowu Wang Chengfeng (Faculty of Chemistry and Circumstance, Changsha University of Science and Technology, Changsha, 410076, China; Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China)

【机构】 长沙理工大学化学与环境工程系； 昆明理工大学材料与冶金工程学院；

【摘要】 以分析纯AlCl3·6H2O为原料,采用电化学方法在常温下合成了氧化铝纳米晶核,经500℃热处理2h,粉体完全转化为γ-Al2O3, 晶化比较完全,经950℃温度处理2h,转化为具有完好结晶的α-Al2O3。粉体初始粒径为10nm。与其他方法相比,该方法具有预烧温度低、操作简便、污染小、能耗低、原材料利用率高、不会引入杂质等优点。更多还原

【Abstract】 A new preparation method for nanometer alumina powder is proposed. In low- temperature condition , the nuclei of alumina were synthesized simply by electrolyzing aluminum chloride solution after 25 h . After being calcinated at 500℃ for 2 h, the nuclei were integrated into γ-Al2O3 phase . And at 800℃ for 1 h, α-Al2O3 phase appeared, at 800℃ for 1 h, powders were completely integrated into α-Al2O2 phase. Aboriginal crystal size was about 8 nm. Compared with traditional chemical methods, this new method is a new method with low energy consumption , convenient for operation, high source using ratio, and a few environmental pollution.更多还原