Synthesis of AIN Powder from Precipitation Precursor by Carbon Thermal Reduction in Flowing Nitrogen

摘要：

　　Aluminum nitride(AIN) powders were synthesized by carbonthermal reduction of Ammonium aluminum carbonate hydroxide(AACH).The AACH were prepared from ammonium alum and ammonium hydrogen carbonate by precipitation method and AACH adhere to carbon black during precipitation.The precursor has a high reaction activity (near 100% of nitridation ratio after heated in flow nitrogen at 1400℃,2h).After carbon remove in muffle furnace at 700 ℃,white color Aluminum nitride (AIN) powder attained and mean size is 100 nm.Phase presents in the products during heating in flowed nitrogen were observed by X-ray diffraction.AIN formed at 1300℃ and the reaction ended at 1400℃,the reaction temperature and annealing time were much lower than nitridate the mixture of Al2O3 and carbon black.Particle size was increased when reaction temperature increased from 1400℃ to 1550℃.

关键词： Aluminium nitride carbonthermal reduction precipitation carbon remove

作者: Huifeng Lu Mingli Qin Suihe Jiang Aimin Chu Yan Zhang Xuanhui Qu

作者单位: School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 10083,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 24-27

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）