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    • 6. 发明授权
    • Non-linear resistor and process for producing same
    • 非线性电阻器及其制造方法
    • US4319215A
    • 1982-03-09
    • US163296
    • 1980-06-26
    • Takeo YamazakiTadahiko Miyoshi
    • Takeo YamazakiTadahiko Miyoshi
    • H01C7/10C03C3/091C03C3/102H01C7/102
    • H01C7/102
    • Disclosed is a non-linear resistor of a sintered ZnO ceramics, which has a glass coating having a baking temperature higher than 850.degree. C. but a temperature lower than the sintering temperature of the sintered ZnO ceramics, and has a composition:(a) 30 to 75% by weight of SiO.sub.2,(b) 0.3 to 15% by weight of at least B.sub.2 O.sub.3 and PbO,(c) 2 to 30% by weight of Al.sub.2 O.sub.3,(d) less than 30% by weight of an alkaline earth metal oxide,(e) less than 40% by weight of ZnO,(f) less than 25% by weight of TiO.sub.2, and(g) less than 5% by weight of an alkali metal oxide.The glass coating baked at a range of 850.degree. C. to 1300.degree. C. provides non-linear resistors having a large non-linear coefficient and a high impulse current resistance as well as a good resistance to an acid and water.
    • 公开了一种烧结ZnO陶瓷的非线性电阻器,其具有烧结温度高于850℃但温度低于烧结的ZnO陶瓷的烧结温度的玻璃涂层,并且具有以下组成:(a) 30〜75重量%的SiO 2,(b)0.3〜15重量%的至少B 2 O 3和PbO,(c)2〜30重量%的Al 2 O 3,(d)小于30重量% 金属氧化物,(e)小于40重量%的ZnO,(f)小于25重量%的TiO 2,(g)小于5重量%的碱金属氧化物。 在850℃至1300℃范围内烘烤的玻璃涂层提供具有非线性系数大且具有高脉冲电流电阻的非线性电阻器以及对酸和水的良好抗性。
    • 7. 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