Zn-Crコーティング膜の構成相と耐食性

• 崔 漢哲

  韓国光陽大学製鉄金属学科および産学官協同研究所

• 崔 異川

  韓国全南大学金属工学科

• 金 官烋

  韓国全南大学金属工学科

• 安 徳洙

  韓国浦項綜合製鉄株式会社技術研究所光陽圧延研究グループ

• 黄 金衍

  韓国株式会社河南電子付設研究所製品開発チーム

書誌事項

タイトル別名

• Intermetallic Constitution Phases and Corrosion Resistance of Zn-Cr Coatings
• Zn Cr コーティング マク ノ コウセイソウ ト タイショクセイ

抄録

It has been investigated constitution phases and corrosion resistance of Zn-Cr coatings fabricated by electroplating method and electron-beam physical vapor deposition method (EB-PVD).<BR>The electroplated Zn-Cr alloy consisted mainly of η′-Zn phase for the lower Cr content than 7.9 mass%Cr and γ′-ZnCr phase for the higher Cr content. In the Zn-Cr coating fabricated by EB-PVD the γ′-ZnCr phase appeared clearly at 3 mass%Cr and it became the sole phase at 50 mass%Cr. The amount of η′-Zn phase decreased obviously with increasing Cr content when it exceeded 15 mass%Cr.<BR>The electrochemical measurement of the electroplated Zn-Cr film has shown corrosion potential of about −1000 mV vs. SCE. The current density of active region and the amount of dissolved Zn and Cr decreased significantly with increasing Cr content. The electrochemical characteristics of Zn-Cr alloy fabricated by EB-PVD have shown that the alloy of 50 mass%Cr had the highest corrosion potential(−500 mV) and the lowest critical passive current density than that of the electroplated.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 66 (5), 438-444, 2002

  公益社団法人 日本金属学会

キーワード

• zinc-chromium coating
• corrosion resistance
• γ′ and η′ non-equilibrium phase
• electroplating
• electron-beam physical vapor deposition

詳細情報

• CRID: 1390001206492060288
• NII論文ID: 10008832954
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.66.5_438
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 6178940
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6178940
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/66/5/66_5_438/_pdf
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