Synthesis of Aluminum Oxynitride Powder by Carbothermal Reduction Method

摘要：

　　γ-aluminum oxynitride (γ-ALON) powder was prepared by carbothermal reduction method using γ-Al2O3 and activated carbon as raw materials.Effects of activated carbon content,synthesizing temperature,holding time and carbon impurity on ALON powder were studied.It was found a two-step procedure,first sintering at about 1550℃-1650℃ then at about 1750℃-1850℃,was effective to prepare high-purity ALON powder.The removal of carbon impurity was crucial for the preparation of ALON powder,which effectively improved the purity of ALON powder.The prepared powder was characterized by XRD and SEM,which indicated that pure ALON powder prepared by a two-step procedure had well-developed crystalline and homogenous granularity.Transparent ALON ceramics were prepared by hot-press sintering at 1850~1900℃ for up to 2~4h using ALON powder and some sintering additive,the transmission of sample with thickness of 1 rnm was 81% at infrared wave.

关键词： Synthesis Aluminum oxynitride Carbothermal reduction

作者: Ting-yan Tian Hong-bing Du Feng Sun Hua-wei Jiang

作者单位: Research Institute of Synthetic Crystals, Beijing 100018, China;Beijing Sinoma Synthetic Crystals Co., Ltd, Beijing 100018, China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 791-793

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）