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MICROSTRUCTURE OF NiCrBSi/WC COMPOSITE COATING DEPOSITED ON AISI316 STAINLESS STEEL BY TIG COATING PROCESS

Author

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  • S. BUYTOZ

    (Faculty of Technology, Department of Materials and Metallurgy Engineering, Firat University, Elazig, Turkey)

  • M. KOK

    (#x2020;Faculty of Science, Department of Physics, Firat University, Elazig, Turkey)

  • I. N. QADER

    (#x2020;Faculty of Science, Department of Physics, Firat University, Elazig, Turkey‡College of Science, Department of Physics, University of Raparin, Sulaymaneyah, Iraq)

  • E. BALCI

    (#x2020;Faculty of Science, Department of Physics, Firat University, Elazig, Turkey)

  • F. DAGDELEN

    (#x2020;Faculty of Science, Department of Physics, Firat University, Elazig, Turkey)

Abstract

It is aimed to investigate the coating of AISI316 stainless steel with NiCrBSi/WC at different ratios using TIG method. In this study, the Ni-based WC-reinforced MMC layer was manufactured by the TIG composite coating method, and then the microstructure of the coating layer was examined. Microstructure and phase components of the composite coatings were characterized by optical microscopy, scanning electron microscopy, and X-ray diffraction. A metallurgic bound was found between the coating layer and the substrate through the TIG coating process. WC was re-solidified in the matrix by dissolving with high input energy. Several phases were found, including Ni-rich (γ-Ni) primary dendritic phase, Ni-Ni3B, and Ni3Si eutectic structure, Cr7C3, Cr2B3, Cr3Ni2, Ni2W4C, and Ni17W3 phases in dendritic structures. The presence of carbides in the structure had affected the hardness of the coating. The maximum hardness value was found to be 469.5 HV and the hardness of the coating layers was increased at least 2.5 times compared to that of the substrate material.

Suggested Citation

  • S. Buytoz & M. Kok & I. N. Qader & E. Balci & F. Dagdelen, 2021. "MICROSTRUCTURE OF NiCrBSi/WC COMPOSITE COATING DEPOSITED ON AISI316 STAINLESS STEEL BY TIG COATING PROCESS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(02), pages 1-15, February.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:02:n:s0218625x2050050x
    DOI: 10.1142/S0218625X2050050X
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