凝胶-溶胶协同碳热还原法合成二硼化锆粉体及生长机制探究  

Synthesis of zirconium diboride powder by gel-sol synergistic carbothermal reduction method and research on its growth mechanism

作　　者：沈浩 闫健 胡小晔 李昕扬 胡晨光 吴玉程[1] SHEN Hao;YAN Jian;HU Xiaoye;LI Xinyang;HU Chenguang;WU Yucheng(Hefei University of Technology,School of Materials Science and Engineering,Hefei University of Technology,Anhui 230009,Hefei,China;Institute of Solid State Physics,Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,China)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009 [2]中国科学院合肥物质科学研究院固体物理研究所,安徽合肥230031

出　　处：《金属功能材料》2022年第1期8-12,19,共6页Metallic Functional Materials

基　　金：中央高校基本科研业务费专项资金资助(PA2020GDJQ0026)。

摘　　要：以正丙醇锆(C_(12)H_(28)O_(4)Zr)为锆源,硼酸(H_(3)BO_(3))为硼源,山梨醇(C_(6)H_(14)O_(6))为碳源,乙酸(C_(2)H_(4)O_(2))为溶剂,采用溶胶-凝胶协同碳热还原法制备了高纯超细硼化锆(ZrB_(2))粉体。分别研究了碳含量和硼含量对产物的物相和形貌的影响。通过X射线衍射仪、拉曼光谱仪、扫描电镜、透射电镜以及自带的X射线能谱仪对硼化锆粉体进行了表征和分析。结果表明:当初始原料中硼锆摩尔比为3,碳锆摩尔比为11时可得到形貌和粒度等综合性能最好的ZrB_(2)粉体。硼化锆颗粒呈球形或类球形,颗粒边界清晰,分散性较好,粒径分布在300~500 nm之间。Using zirconium n-propoxide(C_(12)H_(28)O_(4)ZR)as the zirconium source,boric acid(H_(3)BO_(3))as the boron source,sorbitol(C_(6)H_(14)O_(6))as the carbon source,and acetic acid(C_(2)H_(4)O_(2))as the solvent,high-purity and ultrafine particlesof Zirconium boride(ZrB_(2))powder were prepared by the sol-gel cooperative carbothermic reduction method.The effects of carbon content and boron content on the phase and morphology of the product were studied respectively.The zirconium boride powder was characterized and analyzed by X-ray diffractometer,Raman spectrometer,scanning electron microscope,transmission electron microscope and its own X-ray energy spectrometer.The results shown that when the molar ratio of boron to zirconium in the initial raw materials is 3 and the molar ratio of carbon to zirconium is 11,the ZrB_(2) powder with the best comprehensive properties such as morphology and particle size can be obtained.The zirconium boride particles are spherical or quasi-spherical,with clear particle boundaries,good dispersion,and a particle size distribution between 300 and 500 nm.

关 键 词：ZrB_(2) 溶胶-凝胶 碳热还原 高纯 超细 

分 类 号：TQ174.758.12[化学工程—陶瓷工业] TB383.3[化学工程—硅酸盐工业]