钇掺杂氧化锆粉体的制备方法及性能分析  

Preparation Method and Performance Analysis of Yttrium Doped Zirconia Powder

作　　者：高旸 孙兆松 郭土 杨雁 陈佳星 李雷 GAO Yang;SUN Zhaosong;GUO Tu;YANG Yan;CHEN Jiaxing;LI Lei(Sinopec(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian Liaoning 116045,China;Sinopec Zhongyuan Petrochemical Co.,Ltd.,Puyang Henan 457000,China)

机构地区：[1]中石化(大连)石油化工研究院有限公司,辽宁大连116045 [2]中国石化中原油田化工有限责任公司,河南濮阳457000

出　　处：《当代化工》2024年第6期1383-1388,1393,共7页Contemporary Chemical Industry

基　　金：中石化重点科技项目(项目编号:112205)。

摘　　要：通过不同制备技术(固相合成法、共沉淀法、水解法、自蔓延燃烧法)合成了摩尔分数为8%的钇掺杂氧化锆陶瓷粉体(8YSZ)。研究了不同制备技术对粉体粒度、比表面积和相结构的影响。探讨了pH、焙烧温度、研磨方式与研磨时间等条件因素对共沉淀法制备的8YSZ粉体相结构和粒度的影响。同时对其密度、抗弯强度和离子电导率进行了测试表征。结果表明:共沉淀法制备的8YSZ粉体,控制pH=8~10均可以合成出单一相的样品;焙烧温度对8YSZ粉体结晶度有较大影响,1000℃以上焙烧可生成结晶度较好的粉体;球磨和砂磨方式分别能控制粉体粒度在10μm和1μm以下。此外,共沉淀法制备的8YSZ粉体密度和抗弯强度分别达到了5.78 g·cm^(-3)和207.7 MPa,其在500~750℃具有良好的Arrhenius电导线性关系(相关系数为0.9927)和最低的电导活化能(0.70 eV·K^(-1))。The mole fraction 8%yttrium doped zirconia ceramic powder(8YSZ)was synthesized using different preparation techniques(solid phase synthesis,coprecipitation method,hydrolysis method,self-propagating high temperature synthesis).The effects of different preparation techniques on the particle size,specific surface area,and phase structure of powders were studied.The effects of pH value,calcination temperature,grinding method and time on the phase structure and particle size of 8YSZ powder prepared by coprecipitation method were investigated.And the density,bending strength,and ion conductivity were tested and characterized.The results indicated that single phase 8YSZ samples were synthesized by coprecipitation method with pH controlled at 8~10.The calcination temperature had a significant impact on the crystallinity of 8YSZ powder,calcinating above 1000℃could generate powder with good crystallinity.The ball-milling and sand-milling methods could respectively control the particle size of the powder to be below 10μm and 1μm.In addition,The density and flexural strength of 8YSZ powder prepared by coprecipitation method reached 5.78 g·cm^(-3 )and 207.7 MPa,and it had a good Arrhenius conductivity linear relationship(correlation coefficient was 0.9927)and the lowest conductivity activation energy(0.70 eV·K^(-1))in the range of 500~750℃.

关 键 词：钇掺杂氧化锆 电解质 粉体技术 制备 合成 

分 类 号：TQ174.75[化学工程—陶瓷工业]