クロムの高温酸化に及ぼす微量の塩化水素の影響

• 佐藤 芳幸

  秋田大学鉱山学部物質工学科

• 原 基

  秋田大学鉱山学部物質工学科

• 品田 豊

  秋田大学鉱山学部物質工学科

書誌事項

タイトル別名

• Effect of a Small Amount of Hydrogen Chloride on High Temperature Oxidation of Chromium
• クロム ノ コウオン サンカ ニ オヨボス ビリョウ ノ エンカ スイソ ノ

抄録

High temperature oxidation behavior of Cr was examined under a N₂-50%O₂ atmosphere including 1%HCl by volume. At 973-1073 K, mass gains of Cr in the atmosphere were larger than those in 100%O₂. Temperature dependence of the mass gain of Cr after oxidation in an 1%HCl atmosphere was very peculiar. At the temperatures lower than 1073 K, the mass gains in 1%HCl increased with a rise in oxidation temperature. But at higher temperatures than 1123 K, the mass gains were relatively small and became close to the values in 100%O₂. In addition, temperature dependence of corrosion loss of the specimen in 1%HCl was almost the same as that of mass gain in 1%HCl. It was also found by XRD and EDX analyses that scales formed on Cr in 1%HCl consisted of Cr₂O₃ containing some chromium chloride. These oxidation behaviors of Cr in 1%HCl were investigated thermodynamically, and it was proposed that the mechanism of the accelerated oxidation induced by HCl was explained by chlorination reaction of Cr and oxidation reaction of chromium chlorides inside the scale.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 59 (10), 1036-1040, 1995

  公益社団法人 日本金属学会

キーワード

• high temperature oxidation
• chromium
• hydrogen chloride
• thermogravimetry
• chlorination

詳細情報

• CRID: 1390282681468220032
• NII論文ID: 10001671494
• NII論文ID: 10004473897
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.59.10_1036
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• ISSN: http://id.crossref.org/issn/00214876
• NDL書誌ID: 3641726
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3641726
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/59/10/59_10_1036/_pdf
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  • NDL
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