前驱体法制备六方氮化硼颗粒及高温精制  

Precursor Synthesis and High-temperature Refinement of Hexagonal Boron Nitride Particles

作　　者：何冬青[1] 王刚[1] 龙佳朋[1] 梁兵[1] 

机构地区：[1]沈阳化工大学材料科学与工程学院,沈阳110142

出　　处：《材料导报》2016年第18期46-49,共4页Materials Reports

基　　金：国家科技支撑计划(2012BAB06B03);国家国际科技合作与交流专项(2013DFA51200);辽宁省科学技术计划项目(2015304002)

摘　　要：以三聚氰胺和硼酸为原料,通过共沉淀法合成了二硼酸-三聚氰胺,在最佳工艺条件下以二硼酸-三聚氰胺为前驱体在氨气气氛中烧结制得六方氮化硼颗粒。采用IR、XRD、TG、SEM等测试方法对中间物和产物进行了表征,确定了中间物及产物的组成、物相、粒度及形貌。研究结果表明:以二硼酸-三聚氰胺为前驱体在1200℃烧结4h,可制得高纯度、晶型好的六方氮化硼。经过高温精制后的六方氮化硼颗粒具有较高的结晶度和致密度,其粒径可以达到20μm以上,纯度为98.5%。C3H6N6 · 2H3BO3 was synthesized by coprecipitation method using melamine and boric acid as raw materials, and used as precursor to prepare h-BN particles by sintering in ammonia gas atmosphere. The precursor and product were respectively characterized by IR, XRD, TG and SEM analyses. The results indicated that h-BN with high purity and good crystalline can be obtained via calcining the precursor at 1200 ℃ for 4 h. After high-temperature refinement, the resultant h-BN particles exhibit high crystallinity and compactness, with a particle size of larger than 20μm and a purity of 98.5 %.

关 键 词：三聚氰胺 硼酸 前驱体 六方氮化硼颗粒 

分 类 号：TB332[一般工业技术—材料科学与工程]