盐添加物对溶液燃烧——碳热还原制备AlN的影响  

Effects of Salts Additives on Combustion-Carbothermal Synthesis of AlN Powders

作　　者：吴昊阳[1] 秦明礼[1] 曲选辉[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《真空电子技术》2015年第6期10-13,共4页Vacuum Electronics

基　　金：国家自然科学基金项目(NO.50802006和NO.51172017);北京市自然科学基金项目(NO.2102028);中央高校基本科研业务费(FRF-TP-11-004A)

摘　　要：采用溶液燃烧合成—碳热还原法制备了AlN粉末,研究了NaCl、NaF添加物对制备的前驱物、氮化过程及A1N粉末形貌的影响。结果表明:在溶液中分别添加一定量的NaCl和NaF,均能够得到厚度较薄的片状前驱物;添加NaF制备的前驱物在1500℃通氮气煅烧2 h完全氮化时,能够得到尺寸分布均匀、更为蓬松、分散的AlN粉末;此外NaCl、NaF的添加不仅影响了A1N的形貌,而且影响了其初始氮化温度。Aluminum nitride（AIN） powders were synthesized by combustion-carbothermal method.Effects of NaCl and NaF additives on the preparation of the precursor,the nitriding process and the AIN powder morphology were studied.The results indicated that the precursors synthesized with a certain amount of NaCl or NaF additives were paper-thin flaky particles.A complete nitriding of the precursor synthesized with NaF additive was executed by being calcined at 1500℃ in N_2 for 2 h,and then uniform,fluffy and dispersed AIN powders were obtained.The addition of NaF and NaCl can not only affect the morphology of AIN,but also affect the initial nitriding temperature.

关 键 词：ALN NACL NAF 溶液燃烧合成 碳热还原法 

分 类 号：TM286[一般工业技术—材料科学与工程]