摘要
以尿素为固体氮源,甲醇为溶剂,AlCl_3·6H_2O为铝源,采用尿素溶液法制备了纳米AlN粉体。采用FT-IR对前驱盐进行了结构分析,并通过XRD和SEM分别对最终煅烧产物进行了结构和形貌的表征。重点研究了尿素/金属摩尔比R值和煅烧温度对合成产物的晶体结构和形貌的影响。结果发现:AlN的纯度随R值的增加而增大,R值大于6可以获得单一AlN相,R值小于6获得AlN和Al2O3的混合相;此外,R值也直接影响到AlN纳米粉体和团聚颗粒的形貌,所制备AlN纳米粉体的粒径和团聚的球状颗粒的粒径随R值的增加出现细化的趋势。
High pure nano-sized A1N powder was synthesized by a soft urea way with AlCl3 · 6H2O as an aluminums source, methanol as a solvent, urea as a solid N source. The structure of the A1N precursor salt was analyzed by FT-IR, the as-obtained powders were characterized by XRD and SEM. The effect of the urea/metal molar ratio R and the calcination temperatures on the crystal structure and morphology of AlN powders was studied significantly. The results show that pure AlN phase is obtained as the urea/ metal molar ratio （R） is more than 6, and compound of AlN and A1203 are obtained when the R is less than 6 ; The mor-phology of AlN is also affected by the R value, the size of AlN powder and agglomeration particles decrease with the increase of R value.
出处
《人工晶体学报》
CSCD
北大核心
2017年第5期915-920,共6页
Journal of Synthetic Crystals
基金
广东省自然科学基金-博士启动项目(2014A030310235)
国家自然科学基金青年基金(51602064)
关键词
纳米AL
N
尿素
尿素溶液法
团聚
nano-sized AlN
urea
soft urea pathway
agglomeration
作者简介
黄雄（1992-），男，湖北省人，硕士研究生。
通讯作者：程艳玲，讲师。
