Preparation of ultrafine InN powder by the nitridation of In2O3 or In(OH)3 and its thermal stability

被引:33
作者
Gao, L [1 ]
Zhang, QH [1 ]
Li, JG [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Surface Mi, Shanghai 200050, Peoples R China
关键词
D O I
10.1039/b208105a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Crystalline InN powder has been prepared by the nitridation of In2O3 and In(OH)(3) with NH3 gas for the first time, and ultrafine InN powder in the size range 50-300 nm and with a specific surface area of 8 m(2) g(-1) has been obtained using In2O3 nanoparticles as the starting material. The resulting powders were characterized by XRD, FE-SEM, TEM, TG-DSC and BET surface area techniques. It was found that nanosized In2O3 was completely converted into InN at 600 degreesC within 8 h. The thermal stability of the ultrafine InN powder in air and under a nitrogen atmosphere was also investigated. It was observed that InN began to be oxidized into In2O3 at 389 degreesC and decomposed in the narrow temperature range of 595-696 degreesC in flows of air and N-2, respectively.
引用
收藏
页码:154 / 158
页数:5
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