Stress Corrosion of Silicate Glasses by Hydrogen Sulfide

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  • SOGA Naohiro
    Department of Industrial Chemistry, Faculty of Engineering, Kyoto University
  • MORI Kanji
    Department of Industrial Chemistry, Faculty of Engineering, Kyoto University
  • HIRAO Kazuyuki
    Department of Industrial Chemistry, Faculty of Engineering, Kyoto University

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Other Title
  • ケイ酸塩ガラスの硫化水素による応力腐食反応
  • ケイサンエン ガラス ノ リュウカ スイソ ニヨル オウリョク フショク ハン
  • けい酸塩ガラスの硫化水素による応力腐食反応

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Description

The crack velocity in fused silica and soda-lime silicate glass was determined at 17∼64°C in various H2S gas environments from 0.1 to 1 Torr by means of the double torsion technique, in order to / clarify the mechanism of stress corrosion reaction between H2S and stressed glass. The chemical reaction was found to be the first-order reaction similar to that between H2O and stressed glass, although the reaction rate with H2S was much slower than that with H2O. The activation energy of the reaction was 38 kcal/mol between H2S and fused silica and 27kcal/mol between H2S and soda-lime silicate glass. These values were higher than those with H2O by several kcal, and this difference was attributed to the difference in size and polar ization between H2S and H20 molecules. However, the mechanism of stress corrosion of silicate glasses bx, H2S was essentially the same as, that by H2O.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1981 (9), 1481-1485, 1981-09-10

    The Chemical Society of Japan

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