液相先驱体法制备纳米ZrC陶瓷粉体  

PREPARATION OF NANOMETER ZrC CERAMIC POWDER BY A LIQUID PRECURSOR METHOD

作　　者：黄庆[1] 董志军[1] 张贤[1] 刘树仙[1] 李轩科[1] 

机构地区：[1]武汉科技大学化学工程与技术学院,武汉430081

出　　处：《中国陶瓷》2013年第5期17-21,共5页China Ceramics

基　　金：国家自然科学基金资助项目(50972110)

摘　　要：采用四氯化锆和邻二苯酚等为锆源和碳源合成了ZrC的先驱体粉末,利用FT-IR,XRD和SEM对ZrC先驱体的可能组成以及由其热处理制备的ZrC粉末的结构和形貌进行了表征。结果表明,邻二苯酚为ZrC的形成提供了有效的碳源;1 200℃热处理先驱体主要由立方相ZrO2构成,1 300℃后经碳热还原形成了的立方相ZrC,1 560℃时基本全部转化为ZrC,晶粒尺寸约为34 nm。Zirconium carbide powders were produced by a liquid precursor method using zirconium tetrachloride as zirconium source and catechol as carbon source. The possible composition, and the structure and morphology of this precursor and its heat-treated products were characterized by Fourier transform infrared （FTIR） spectroscopy, X-ray diffraction （XRD） and scanning electron microscopy （SEM） ananyses. The results show that catechol is an effective carbon source for the formation of ZrC converted from the liquid precursor. The products prepared at 1 200℃ is mainly composed of cubic ZrO2. With heat treatment temperature increasing to 1 300℃, the formation of cubic phase ZrC by carbothermal reduction is observed. With further increasing reaction temperature to 1 560℃, the ZrO2 is completely converted into cubic phase ZrC with the crystallite size size ca. 34 nm.

关 键 词：ZRC 先驱体 热处理 

分 类 号：TQ174.758.12[化学工程—陶瓷工业]