SiC-ZrC复合超细粉末的合成及抗氧化性能研究  

Synthesis and Antioxidant Properties of SiC-ZrC Composite Ultrafine Powders

作　　者：周虹伶 曹宇 邹素琳 欧红 田嘉美 陈占军 胡继林 Zhou Hong-ling;Cao Yu;Zou Su-lin;Ou Hong;Tian Jia-mei;Chen Zhan-jun;Hu Ji-lin(Modern Industry School of Advanced Ceramics,Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials,School of Materials and Environmental Engineering,Hunan University of Humanities,Science and Technology,Loudi Hunan 417000,China;School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen Jiangxi 333403,China)

机构地区：[1]湖南人文科技学院材料与环境工程学院,精细陶瓷与粉体材料湖南省重点实验室,先进陶瓷现代产业学院,湖南娄底417000 [2]景德镇陶瓷大学材料科学与工程学院,江西景德镇333403

出　　处：《江西化工》2024年第1期45-49,共5页Jiangxi Chemical Industry

基　　金：湖南省重点研发计划项目(2021GK2015);湖南省教育厅科学研究项目(23C0387);湖南省大学生创新创业训练计划项目(湘教通[2022]174号-4348)。

摘　　要：以二氧化锆、硅溶胶、炭黑作为前驱体原料,采用碳热还原法来制备SiC-ZrC复合粉末。研究了反应温度对SiC-ZrC复合粉末的烧失率、物相组成与显微结构的影响。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、综合热分析仪(TG-DTA)等手段对粉末样品进行测试分析。结果表明:在合成温度达到1500℃以上时,采用碳热还原法可成功合成SiC-ZrC复合粉末。在1550℃~1600℃下合成的产物中主要存在SiC和ZrC的特征衍射峰,合成产物结晶度好,这表明该条件下的合成反应进行比较完全。与1550℃相比,在1600℃温度下的合成产物中存在一定量的晶须,且存在有近似球状和短棒状及絮状颗粒,形成多样化显微结构。SiC ZrC composite powders were prepared by carbothermal reduction using zirconium dioxide,silica sol and carbon black as precursor materials.The effect of reaction temperature on the ignition loss rate,phase composition,and microstructure of SiC-ZrC composite powders was studied.Diffractometer(XRD),scanning electron microscope(SEM)and comprehensive thermal analyzer(TG-DTA)were used to test and analyze the powder samples.The results showed that SiC-ZrC composite powders were successfully synthesized by carbothermal reduction method at a synthesis temperature above 1500℃.The characteristic diffraction peaks of SiC and ZrC mainly exist in the synthesized products at 1550℃~1600℃,and the crystallinity of the synthesized products is good,indicating that the synthesis reaction under this condition is relatively complete.Compared with 1550℃,there is a certain amount of whiskers in the synthesized product at 1600℃,and there are similar spherical,short rod-shaped,and flocculent particles,forming a diverse microstructure.

关 键 词：SiC-ZrC 碳热还原法 反应温度 复合粉末 抗氧化性能 

分 类 号：TQ127.2[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]