Fabrication and Characterization of Graphene Oxide Reinforced Ni-B Composite Coating by Pulsed Electrodeposition Technique
The present study reports some properties of Ni-B-GO composite coatings deposited on the surface of St37 steel (low carbon steel) substrate by pulse electrodeposition technique. The graphene oxide (GO) was utilized as reinforcement in the bath. The mechanical properties of Ni-B coating and Ni-B-GO composite coatings showed that while the indentation depth was high for the Ni-B coating, the indentation depth decreases with the increase in GO content. The friction coefficient of coatings decreases from 0.46 to 0.28 as GO amount increases. The result of wear test reveals that an amount of 100 mg GO in the coating layer provide a relatively smooth wear track. GO behaves as a lubricate during friction and wear test between the test sample and counter-face and decreases the friction coefficient. It was found that the dominant wear mechanism is adhesive wear. The corrosion potential of composite coating was decreased depending on the GO content. The icorr value of the Ni-B coating was 1.9 x 10-5 A·cm-2 while this value reduces to 2.6 x 10-6 A·cm-2 for GO-100 sample. The Ecorr value of the Ni-B coating was -0.565 mV, while the GO particles included in the coating, the Ecorr value increases to -0.470 mV.
E. Duru et al., "Fabrication and Characterization of Graphene Oxide Reinforced Ni-B Composite Coating by Pulsed Electrodeposition Technique," Diamond and Related Materials, vol. 120, article no. 108688, Elsevier, Dec 2021.
The definitive version is available at https://doi.org/10.1016/j.diamond.2021.108688
Materials Science and Engineering
Keywords and Phrases
Composite Coating; Corrosion; Graphene Oxide; Hardness; Wear
International Standard Serial Number (ISSN)
Article - Journal
© 2021 Elsevier, All rights reserved.
01 Dec 2021