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MICROSTRUCTURE AND PROPERTIES OF THE Ni–B AND Ni–B–Ce ULTRASONIC-ASSISTED ELECTROLESS COATINGS

Author

Listed:
  • WEI QIAN

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • HAOTIAN CHEN

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • CHENQI FENG

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • LIYING ZHU

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • HUANMING WEI

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • SHENG HAN

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • GUISHENG LI

    (#x2020;College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, P. R. China)

  • HUALIN LIN

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

  • JIBO JIANG

    (School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, P. R. China)

Abstract

We successfully obtained Ni–B and Ni–B–Ce coatings with and without sonication on low-carbon steel (Q235) through electroless plating with the deposition time of 60min. The surface morphology and elemental composition of the coatings were evaluated by scanning electron microscopy (SEM) and inductively coupled plasma (ICP). The 11μm thick sonicated Ni–B–Ce (Son-Ni–B–Ce) coating is uniform with the composition of Ni 87.1%, B 6.2% and Ce 6.6%. X-ray diffraction (XRD) measurements implied a typical broaden peak around 44∘, considered as amorphous structure which was confirmed by selected area electron diffraction pattern (SAED). Atomic force microscopy (AFM) showed a typical circular pit of Ni–B–Ce coating and Son-Ni–B–Ce coating. X-ray photoelectron spectroscopy (XPS) revealed the chemical status of coating components. The mechanical and corrosion resistance properties were determined by Vickers hardness tester, potentiodynamic polarization (Tafel) and electrochemical impedance spectroscopy (EIS) in 3.5wt. % NaCl solution. As a result, the Son-Ni–B–Ce coating revealed the optimum hardness (956HV), minimum roughness Ra (92.38nm) and excellent corrosion resistance (3.65μAcm−2) among all coatings.

Suggested Citation

  • Wei Qian & Haotian Chen & Chenqi Feng & Liying Zhu & Huanming Wei & Sheng Han & Guisheng Li & Hualin Lin & Jibo Jiang, 2018. "MICROSTRUCTURE AND PROPERTIES OF THE Ni–B AND Ni–B–Ce ULTRASONIC-ASSISTED ELECTROLESS COATINGS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(06), pages 1-11, August.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:06:n:s0218625x19500069
    DOI: 10.1142/S0218625X19500069
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