Synthesizing the Nanocrytalline Cobalt-Iron Coating Through The Electrodeposition Process With Different Time Deposition

Masdek, Nik Rozlin Nik Mohd; Mansor, M. S.; Salleh, Zuraidah; Hyie, Koay Mei

doi:10.1088/1757-899x/328/1/012002

Cited by 1 publication

(1 citation statement)

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“…Mild steel samples coated for 15 and 30 minutes recorded the surface roughness of 3.737 µm and 2.667 µm, respectively. From the results, it can be deduced that the surface roughness is affected by the duration of deposition time, due to void formation and oxidation process that might take place on the surface material [19]. The presence of oxidation and corrosion initially produces an increase in the surface roughness of uncoated mild steel.…”

Section: Surface Roughnessmentioning

confidence: 98%

The Effect of Cobalt Alloy Nanocrystalline Coating on Tensile Properties and Surface Performance of Mild Steel

Zabri,

Nik Masdek,

Hyie

2023

JMechE

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Coatings are frequently used to enhance the mechanical and physical characteristics of mild steel by protecting mild steel surfaces against corrosion. Corrosion might attack surface without proper coating method which may lead to structural failures and increase maintenance cost. The main objective of this study is to investigate the effect of CoNiFe nanocrystalline coating on surface roughness, hardness, and tensile performance of mild steel substrate. Different parameters were introduced, such as current, pH, deposition times and heat treatment to analyse surface roughness, hardness, and tensile strength of CoNiFe nanocrystalline coating. The lowest surface roughness of 2.14 µm was recorded by CoNiFe nanocrystalline coating with 30 minutes deposition time at pH 3, I: 3 A and heat treated, while the highest recorded surface roughness of 4.233 µm was detected on uncoated mild steel. The highest improvement of microhardness was observed on CoNiFe nanocrystalline coating with 45 minutes deposition time at pH 3, I: 1.5 A and heat treated (393.6 Hv) as compared to the uncoated mild steel (171.44 Hv). Tensile performance of CoNiFe nanocrystalline coating with 45 minutes deposition time at pH 3, I: 1.5 A and heat treated was the highest with yield stress and ultimate tensile stress of 472.35 MPa and 559.11 MPa, respectively. The lowest tensile performance was recorded by uncoated mild steel with yield stress and ultimate tensile stress of 149.40 MPa and 186.78 MPa, respectively.CoNiFe nanocrystalline coating has considerably improved the mild steel surface roughness, hardness and tensile strength which indicate superior mechanical properties for future engineering application.

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Section: Surface Roughnessmentioning

confidence: 98%