Electroless quaternary Ni-Co-Cu-P deposition on Fe substrate

Abd Aziz, Muhammad Alif (2015) Electroless quaternary Ni-Co-Cu-P deposition on Fe substrate. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Electroless quaternary alloys are developed with the addition of two metal additives into the binary nickel alloy of Ni-P to exhibit superior properties such as corrosion and wear resistances. In this study, the electroless quaternary Ni-Co-Cu-P is produced to study the effect of copper and cobalt addition on its corrosion resistance and hardness. The elemental composition and surface morphology is characterized and analyzed using X-Ray Fluorescence (XRF) and Scanning Electron Microscopy (SEM). The corrosion resistance of the quaternary Ni-Co-Cu-P alloy is analyzed using electrochemical measurement. The hardness test is carried out using micro-Vickers Hardness Tester to indicate the strength of the electroless quaternary Ni-Co-Cu-P alloy deposited on the Fe substrate. The Ni-Co-Cu-P has flat and smooth surface as increasing plating bath pH. The deposition rate of electroless Ni-Co-Cu-P increases with increasing plating bath pH. The increase of plating bath pH will decrease the phosphorus, copper and cobalt content. The corrosion potential of electroless quaternary Ni alloy will be shift towards much noble potential compared to Fe and Ni.

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