MOCVDにより合成したIr-Cコンポジット膜の微細構造と電気的性質 Microstructure and Electrical Properties of Ir-C Composite Films Prepared by MOCVD

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Iridium-carbon composite films were prepared by metalloorganic chemical vapor deposition (MOCVD) on yttria stabilized zirconia (YSZ) substrates using an iridium acetylacetonate precursor. The films prepared without oxygen gas addition were black-colored and contained 35 to 70vol% carbon. The carbon was amorphous surrounding iridium grains of 1 to 3 nm in diameter. The Ir-C films showed excellent electrical and catalytic properties for YSZ as a reversible electrode at less than 800K. The impedance associated with the YSZ/Ir-C interface was about 1/3 to 1/5 smaller than that of sputtered Pt electrodes at 773K. By adding a small amount of oxygen gas in the source gases, the carbon content in the films decreased significantly accompanying grain growth of Ir and degradation of electrical performance. The output current using the Ir films containing a trace of carbon (about lmass%C) as electrodes was still four times greater than that using the Pt electrodes at 773K.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 45(1), 20-24, 1998-01-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10002014841
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05328799
  • NDL 記事登録ID
    4392657
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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