クロムを含む非晶質鉄合金の耐食性

• 奈賀 正明

  東北大学金属材料研究所

• 橋本 功二

  東北大学金属材料研究所

• 増本 健

  東北大学金属材料研究所

書誌事項

タイトル別名

• Corrosion Resistivity of Amorphous Iron Alloys Containing Chromium
• クロム オ フクム ヒショウシツテツ ゴウキン ノ タイショクセイ

抄録

In order to evaluate the corrosion resistivity of amorphous iron alloys which have been characterized by outstanding mechanical properties, immersion tests and electrochemical measurements of the amorphous alloys were carried out in acidic and neutral solutions. In a 1 N NaCl solution at 30°C, 0.01–1 N HCl solutions at 30°C and in 10% FeCl₃·6H₂O solutions at 40 and 60°C, pitting corrosion did not occur on the amorphous Fe-Cr-P-C and Fe-Cr-Ni-P-C alloys and the weight change of the alloys containing 8 at% or more Cr was not detected by a microbalance after immersing for 168 hr.<BR>The critical potential for pitting did not appear on polarization curves of the amorphous alloys and the anodic current higher than 10⁻⁷ A/cm² was not observed over the potential range 0 to 0.5 V (SCE) in 1 N NaCl and 0 to 0.9 V (SCE) in 1 M H₂SO₄ by the potentiostatic anodic polarization of the alloys containing 8 at% or more Cr. The extremely high corrosion resistivity of the amorphous iron alloys is attributed to the peculiar film formation partly by the presence of Cr and a large quantity of P in the alloys and partly by a single phase of the amorphous state.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 38 (9), 835-841, 1974

  公益社団法人 日本金属学会

キーワード

• Materials Chemistry
• Metals and Alloys
• Mechanics of Materials
• Condensed Matter Physics

詳細情報

• CRID: 1390001206485555328
• NII論文ID: 130007339224
• NII論文ID: 40018255562
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.38.9_835
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 7611209
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7611209
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/38/9/38_9_835/_pdf
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