单分散RuO_(2)球形颗粒的制备及RuO_(2)/CuO电阻性能的研究  

Preparation of Monodispersed RuO_(2)Spherical Particles and Investigation of Re⁃sistive Performance of RuO_(2)/CuO

作　　者：韩光达 怡裕浩 薛航 贾博谦 朱雪澎 邢天 HAN Guangda;YI Yuhao;XUE Hang;JIA Boqian;ZHU Xuepeng;XING Tian(Xi’an Rare Metal Materials Institute Co.,Ltd.,Xi’an 710016,China;School of Environmental and Chemi-cal Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]西安稀有金属材料研究院有限公司,陕西西安710016 [2]燕山大学环境与化学工程学院,河北秦皇岛066004

出　　处：《铜业工程》2023年第5期64-69,共6页Copper Engineering

基　　金：2022年秦创原引用高层次创新创业人才项目(QCYRCXM-2022-155)资助。

摘　　要：二氧化钌(RuO_(2))具备较高的电阻稳定性和较低的电阻温度系数,被广泛应用于制备厚膜电阻浆料的导电相。以无水氯化钌为原料,水为反应介质,选用绿色且经济的还原剂,利用水热还原法,得到了兼具单分散和高球形度的RuO_(2)颗粒,可满足电阻浆料制备的需要。采用扫描电子显微镜(SEM)分析了RuO_(2)粉的形貌、粒径和团聚状态,以X射线衍射仪(XRD)检测颗粒的晶相,并利用电化学工作站测试了RuO_(2)球形颗粒与RuO_(2)/CuO复合材料的电阻特性。结果表明:单分散、球形度高、尺寸均匀的金红石型纳米RuO_(2)的阻抗值最小,其导电性明显优于出现明显团聚的RuO_(2)颗粒,RuO_(2)/CuO也表现出较强的导电性。由阻抗测试结果可知,RuO_(2)颗粒的加入可显著提升CuO的导电性。Ruthenium dioxide(RuO_(2))exhibits high electrical resistance stability and a low temperature coefficient of resistance,making it widely used as the conductive phase in the preparation of thick-film resistor pastes.By employing anhydrous ruthenium chloride as the raw material and water as the reaction medium,monodisperse RuO_(2)powder with high sphericity through a liquid phase chemical re-ducing hydrothermal precipitation method were obtained.The morphology,particle size,and agglomeration of RuO_(2)powder were ana-lyzed by using scanning electron microscopy(SEM),while the crystal phase of the powder was detected using an X-ray diffractometer(XRD).Additionally,the resistive properties of both RuO_(2)and RuO_(2)/CuO were tested using an electrochemical workstation.The results showed that the monodispersed,high-sphericity,and uniformly sized nano RuO_(2)exhibited the lowest impedance,and its conductivity was significantly superior to RuO_(2)particles with obvious agglomeration.Moreover,compared to CuO,RuO_(2)/CuO also displayed superior conductivity.

关 键 词：水热还原法 单分散球形氧化钌 电阻性能测试 纳米颗粒 RuO_(2)/CuO复合材料 

分 类 号：TM54[电气工程—电器]