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    • 9. 发明授权
    • Oxygen sensor ceramic and process for preparing the same
    • 氧传感器陶瓷及其制备方法
    • US4266979A
    • 1981-05-12
    • US080469
    • 1979-10-01
    • Tadahiko MiyoshiTakeo Yamazaki
    • Tadahiko MiyoshiTakeo Yamazaki
    • C04B35/48C04B35/486G01N27/12G01N27/407G01N27/409H01M8/12
    • G01N27/4073C04B35/486H01M8/1253Y02E60/525Y02P70/56
    • Oxygen sensor ceramic of solid electrolyte of zirconia-yttria system comprises aggregates of cubic zirconia grains having an average grain size of 2-10 .mu.m and monoclinic zirconia grains having an average grain size of 0.2-1 .mu.m, the appregates of the cubic zirconia grains being in contact with one another, and the monoclinic zirconia grains being distributed as aggregates in clearances among the aggregates of the cubic zirconia grains, and has a high thermal shock resistance, a high mechanical strength and a resistivity equal to that of the ceramic consisting only of cubic zirconia grains. The oxygen sensor ceramic is prepared by mixing zirconia powder having a grain size of 0.1-0.5 .mu.m with 4-8% by mole of yttria powder having an average grain size of 0.5-5 .mu.m, on the basis of total mixture, and molding and firing the mixture at 1,400.degree.-1,550.degree. C.
    • 氧化锆 - 氧化钇系统的固体电解质的氧传感器陶瓷包括平均粒径为2-10μm的立方氧化锆颗粒和平均粒径为0.2-1μm的单斜晶氧化锆颗粒的聚集体,立方氧化锆 颗粒彼此接触,并且单斜氧化锆颗粒作为立方氧化锆颗粒的聚集体之间的间隙分布作为聚集体,并且具有高耐热冲击性,高机械强度和等于陶瓷组成的电阻率 只有立方氧化锆颗粒。 氧传感器陶瓷通过将粒径为0.1-0.5μm的氧化锆粉末与平均粒径为0.5-5μm的4-8摩尔%氧化钇粉末以总混合物为基础来制备,以及 在1400°-150℃下对混合物进行成型和烧成