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Formation of Bulk Glassy Fe75–x–yCrxMoyC15B10 Alloys and Their Corrosion Behavior

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Abstract

Formation of bulk Fe-based glassy alloys with high corrosion resistance was succeeded in the Fe75–x–yCrxMoyC15B10 alloy system. A large temperature interval of supercooled liquid region (ΔTx) of 40–90 K was obtained over a wide composition range for the Fe75?x–yCrxMoyC15B10 alloys. The Fe75–x–yCrxMoyC15B10 alloys were prepared in a bulk glassy form with diameters of 1.0–2.5 mm by copper mold casting. The bulk glassy Fe75–x–yCrxMoyC15B10 alloys exhibited high corrosion resistance in 1 N HCl solution. The glassy alloys containing Cr were spontaneously passivated with a wide passive region before the transpassive dissolution of Cr. The passive current density decreased significantly with an increase of alloying Cr content, indicating that the addition of Cr was effective on enhancing the corrosion resistance. Excess addition of Mo for replacing Fe in the present alloys was detrimental for the corrosion resistance.

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Authors and Affiliations

  1. Institute for Materials Research, Tohoku University, Sendai, 980–8577, Japan

    Shujie Pang, Tao Zhang, Katsuhiko Asami & Akihisa Inoue

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  1. Shujie Pang
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  2. Tao Zhang
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  3. Katsuhiko Asami
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  4. Akihisa Inoue
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Pang, S., Zhang, T., Asami, K. et al. Formation of Bulk Glassy Fe75–x–yCrxMoyC15B10 Alloys and Their Corrosion Behavior. Journal of Materials Research 17, 701–704 (2002). https://doi.org/10.1557/JMR.2002.0100

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  • DOI: https://doi.org/10.1557/JMR.2002.0100

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