Characterization and Corrosion Behaviour of Laser Surface Alloyed Ni-Cr-W-Mo-Cu-C-B Coatings

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著者

    • ESCUDERO M. L
    • Centro National de Investigaciones Metalurgicas(CENIM), C. S. I. C.
    • LOPEZ V.
    • Centro National de Investigaciones Metalurgicas(CENIM), C. S. I. C.
    • MACIAS A.
    • Instituto Eduardo Torroja de la Construccion y del Cemento(IETCC), C. S. I. C.

抄録

A microalloyed steel was precoated with three different thicknesses of Ni-Cr-W-Mo-Cu-C-B powder and laser-surface-alloyed in order to achieve a corrosion-resistant surface alloy. In general, laser treated alloys showed good adherence and considerable penetration into the base material, which varied with laser treatment conditions and initial coating thicknesses. Under conditions studied, laser treated alloys presented a dendritic structure. The degree of dilution increased as both laser scanning rate and initial coating thickness decreased. The lowest iron content at the surface was reached for samples with a 1 000 <small>μ</small>m initial coating thickness and laser treated at the maximum scanning rate 0.054 ms<sup>-1</sup>. This low iron content jointed to a high content of chromium and nickel on the surface gave rise to the formation of a protective and stable passive layer that implied a high corrosion resistance in Na<sub>2</sub>SO<sub>4</sub> 0.1 M. The samples with 250 and 500 μm coating thicknesses presented in most cases a martensitic transformation within the coating due to the high degree of dilution between coating and base material decreasing drastically the corrosion resistance of the melted coating.

収録刊行物

  • ISIJ international

    ISIJ international 37(2), 161-168, 1997-02-15

    The Iron and Steel Institute of Japan

参考文献:  18件中 1-18件 を表示

  • <no title>

    MOORE P. G.

    J. Electrochem. Soc. 128, 1391, 1981

    被引用文献1件

  • <no title>

    ASAMI K.

    J. Non-Cryst. Solids 68, 261, 1984

    被引用文献1件

  • <no title>

    ESCUDERO M. L.

    Mater. Sci. Eng. A158, 227, 1992

    被引用文献1件

  • <no title>

    MCCAFFERTY E.

    J. Electrochem. Soc. 133, 1090, 1986

    被引用文献2件

  • <no title>

    GOLDFARB I.

    Scr. Metall. Mater. 34, 1051, 1996

    被引用文献1件

  • <no title>

    KANG J. C.

    J. Appl. Electrochem. 25, 376, 1995

    被引用文献2件

  • <no title>

    RENAUD L.

    Acta Metall. Mater. 38, 1547, 1990

    被引用文献2件

  • <no title>

    GARCIA-ALONSO M. C.

    Corros. Sci. 38, 515, 1996

    被引用文献1件

  • <no title>

    RENAUD L.

    Mater. Sci. Eng. A134, 1049, 1991

    被引用文献1件

  • <no title>

    LOPEZ V.

    Mater. Sci. Eng. A172, 189, 1993

    被引用文献1件

  • <no title>

    HASHIMOTO K.

    Mater. Sci. Eng. A198, 1, 1995

    被引用文献2件

  • <no title>

    DAHOTRE N. B.

    J. Mater. Sci. 25, 445, 1990

    被引用文献1件

  • <no title>

    KIM T. H.

    J. Mater. Sci. 27, 2967, 1992

    被引用文献2件

  • 146

    NAKA M.

    Corrosion 32, 146, 1976

    被引用文献1件

  • <no title>

    TAKIZAWA Y.

    Mater. Sci. Eng. A198, 145, 1995

    被引用文献1件

  • <no title>

    KANG J. C.

    J. Appl. Electrochem. 25, 376, 1995

    被引用文献2件

  • <no title>

    PELLETIER J. M.

    Mater. Sci. Eng. A134, 1283, 1991

    被引用文献1件

  • Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys

    GARCIA-ALONSO M. C. , ESCUDERO M. L. , LOPEZ V. , MACIAS A.

    ISIJ international 36(2), 172-178, 1996-02-15

    J-STAGE DOI 参考文献11件 被引用文献1件

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