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    • 8. 发明授权
    • Gas sensor and method for manufacturing the same
    • 气体传感器及其制造方法
    • US08377274B2
    • 2013-02-19
    • US12463625
    • 2009-05-11
    • Seiji OhyaTomohiro WakazonoKenji KatoKoji Shiotani
    • Seiji OhyaTomohiro WakazonoKenji KatoKoji Shiotani
    • G01N27/407
    • G01N27/4075
    • A gas sensor including a gas sensor element having a first measurement chamber (16); a first pumping cell (11); a second measurement chamber (18) into which a gas to be measured having a controlled oxygen partial pressure is introduced; and a second pumping cell (13) having a second inner pump electrode (13b) and a second counterpart electrode (13c) pump electrode configured to detect a specific gas component. The second inner pump electrode is made of a material that contains, as a principal ingredient, two kinds of Pt particles having different particle sizes and whose particle size ratio measured by a sedimentation particle-size distribution ranges from 1.75 to 14.2. A mixing ratio between large Pt particles and small Pt particles has a mass ratio of 10/90 to 50/50. A 10 kHz-1 Hz resistance value across the second pumping cell at 600° C. is 150Ω or less.
    • 一种气体传感器,包括具有第一测量室(16)的气体传感器元件; 第一泵送单元(11); 引入具有受控氧分压的待测气体的第二测量室(18); 以及具有第二内泵电极(13b)和配置成检测特定气体成分的第二配对电极(13c)泵浦电极的第二泵浦电池(13)。 第二内泵电极由含有不同粒径的两种Pt颗粒作为主要成分的材料制成,其沉降粒度分布测定的粒径比为1.75〜14.2。 大Pt颗粒和小Pt颗粒之​​间的混合比的质量比为10/90至50/50。 在600℃下跨越第二抽滤单元的10kHz-1Hz电阻值为150&OHgr; 或更少。