Effect of Current Density and Fly Ash Composition on Nickel Grain Size and Hardness of Nickel-Fly Ash Composite Coating Deposited on Aluminum Alloy 6061

Authors

  • Intan Sharhida Othman Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • Muhamad Khaizaki Ahmad Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • Muhammad Zaimi Zainal Abidin Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • Qumrul Ahsan Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • Noraiham Mohamad Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
  • Syahrul Azwan Sundi Faculty of Engineering Technology, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia

Keywords:

current density, fly ash composition, grain size, Ni-FA composite coating

Abstract

The nickel- fly ash (Ni-FA) composite coatings were deposited on zincated aluminium alloy 6061 (AA6061) substrate by using electrodeposition technique. The electrodeposition process was carried out for 1 hour at 40º C. The current density used was extended from 1, 5 to 9 A/dm2. Fly ash particles was added to nickel citrate bath at 0, 10, 50 and 90 g/l for electrodeposition of Ni-FA composite coating. The produced composite coatings were characterized using X-ray Fluorescence (XRF) and X-ray Diffraction (XRD). Microhardness of Ni-FA composite coatings were also investigated in this study. As the current density increased from 5 to 9 A/dm2. The nickel grain size in the Ni-FA composite coating were decreased. The decreasing in nickel grain size resulted in increasing of hardness value. Besides, the hardness results show a clear increasing trend with an increase of fly ash composition from 10 to 90 g/l, due to the presence of hard oxide in the fly ash particles.

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Published

2020-12-01

How to Cite

Othman, I. S. ., Ahmad, M. K. ., Zainal Abidin, M. Z. ., Ahsan, Q. ., Mohamad, N. ., & Sundi, . S. A. . (2020). Effect of Current Density and Fly Ash Composition on Nickel Grain Size and Hardness of Nickel-Fly Ash Composite Coating Deposited on Aluminum Alloy 6061. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 50(1), 1–9. Retrieved from https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2303

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