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DEPOSITING Ni–Co–P ALLOY COATING ON AISI316 STEEL AND ANALYZING ITS PROPERTIES

Author

Listed:
  • ROBABEH JAFARI

    (Department of Materials Engineering, Faculty of Engineering, Urmia University, P.O. Box 57561-165, Urmia, Iran)

  • NAGHI PARVINI AHMADI

    (��Faculty of Materials Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran)

  • RASOUL AZARI KHOSROSHAHI

    (��Faculty of Materials Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran)

  • ZAHRA RAGHEBI

    (��Faculty of Materials Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran)

Abstract

After appropriately preparing the surface of AISI316 steel, the Ni–Co–P coating layer was deposited on the substrate using the electroless method using baths with different mole ratios of CoSO4/NiSO4+CoSO4. Coating rate, weight percentage of the alloy elements, corrosion rate and coating layer hardness were studied in the achieved coating layers. The coating rate of the Ni–Co–P coating layer is a function of the mole ratio of CoSO4/CoSO4+NiSO4, sodium hypophosphite concentration, bath temperature, bath pH and plating time. The electroless deposits studied in this paper are in crystal form. The XRD pattern of the Ni–Co–P deposits shows the peaks related to Ni-fcc and tetragonal Ni12P5. X-ray diffraction pattern confirms the formation of the Ni3P phase during annealing for 1h at 400∘C.

Suggested Citation

  • Robabeh Jafari & Naghi Parvini Ahmadi & Rasoul Azari Khosroshahi & Zahra Raghebi, 2023. "DEPOSITING Ni–Co–P ALLOY COATING ON AISI316 STEEL AND ANALYZING ITS PROPERTIES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 30(02), pages 1-12, February.
    • Handle: RePEc:wsi:srlxxx:v:30:y:2023:i:02:n:s0218625x23500051
    DOI: 10.1142/S0218625X23500051
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