ZrC/Mo-Si系金属硅化物纳米复合粉体的直接熔盐电化学合成  

ZrC/Mo‒Si metal silicides composite nano-powders prepared by direcrt molten salt electrochemistry

作　　者：覃世玉 宋伟豪 刘红霞[1] 马文[1] 白玉[1] QIN Shiyu;SONG Weihao;LIU Hongxia;MA Wen;BAI Yu(School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Jilin Aviation Maintenance Co.,Ltd.,Jilin 132000,China)

机构地区：[1]内蒙古工业大学材料科学与工程学院,呼和浩特010051 [2]吉林航空维修有限责任公司,吉林132000

出　　处：《粉末冶金技术》2025年第2期163-169,179,共8页Powder Metallurgy Technology

基　　金：内蒙古自治区直属高校基本科研业务费资助项目(JY20220265);内蒙古自治区高等学校碳达峰碳中和研究专项资助项目(STZX202227);内蒙古自治区自然科学基金资助项目(2023MS05020)。

摘　　要：为实现ZrC/Mo-Si系金属硅化物复合材料的短流程、低能耗、低成本制备,以ZrSiO_(4)、MoO_(3)和C为原料,采用熔盐电化学法一步制备出了ZrC/Mo-Si系金属硅化物纳米复合粉体,并研究了固体阴极制备工艺、碳含量(质量分数)和碳源类型对电化学合成ZrC/Mo-Si系金属硅化物纳米复合粉体的影响机制。结果表明:以CaCl_(2)-NaCl共晶熔盐作为电解质,在800℃、3.1 V电化学还原15 h可制备出ZrC/Mo-Si系金属硅化物复合粉体材料,其由粒径小于50 nm的近球形颗粒组成。小尺寸、无定型结构的碳粉更适合作为电化学合成ZrC/Mo-Si系金属硅化物复合材料的碳源,原料中的碳含量会影响ZrC与金属硅化物的比例,并影响最终产物中金属硅化物的组成。To develop the preparation method of ZrC/Mo-Si metal silicide composites with the simple process,low energy consuming,and low cost,the ZrC/Mo-Si metal silicide composite nano-powders were prepared by one-pot electrolytic process in molten salt,using ZrSiO4,MoO3,and C as raw materials in this paper.The effects of solid cathode preparation process,carbon content(mass fraction),and carbon source type on the electrochemical synthesis of ZrC/Mo-Si metal silicide composite nano-powders were investigated.The results show that,the ZrC/Mo-Si metal silicide composite nano-powders are prepared by electrochemical reduction at 800℃under 3.1 V for 15 h in CaCl2‒NaCl eutectic molten salt,which are composed of nearly spherical particles with the particle size less than 50 nm.It is found that the carbon powders with the amorphous structure and relatively smaller particle size are more suitable as the carbon source for the electrochemical synthesis of ZrC/Mo-Si metal silicide composites.Moreover,the ratio of ZrC and metal silicide phases,as well as the composition of metal silicide in the final products,can be controlled by adjusting the carbon content in the original materials.

关 键 词：熔盐电化学 金属硅化物 复合材料 纳米粉体 

分 类 号：TF123[冶金工程—粉末冶金] TB332[冶金工程—冶金物理化学]