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Electrochemical Carbonitriding Of 316l Stainless Steel In Molten Salt System

Author

Listed:
  • YANJIE REN

    (Department of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, P. R. China)

  • BO XIAO

    (Department of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, P. R. China)

  • YAQING CHEN

    (Department of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, P. R. China)

  • JIAN CHEN

    (Department of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, P. R. China)

  • JIANLIN CHEN

    (Department of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, P. R. China)

Abstract

This paper reports an electrochemical route for carbonitriding 316L stainless steel in molten salts. Carbonitriding process was accomplished in molten alkaline chloride (LiCl/KCl) with the addition of KNO2 at 480∘C using a three-electrode system in which a carbon sheet was the counter electrode. The carbonitriding layer of 316L stainless steel obtained by potentiostatic electrolysis was analyzed by several physical techniques. The results showed that a compact layer with a thickness of about 7μm formed after the treatment. According to X-ray diffraction analysis, chromium nitride and carbide formed on the surface of carbonitriding layer. The microhardness of the carbonitriding layer is HV 336, as compared to HV 265 for the substrate.

Suggested Citation

  • Yanjie Ren & Bo Xiao & Yaqing Chen & Jian Chen & Jianlin Chen, 2018. "Electrochemical Carbonitriding Of 316l Stainless Steel In Molten Salt System," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(03), pages 1-5, April.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:03:n:s0218625x18500725
    DOI: 10.1142/S0218625X18500725
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