Ni-Bi composite coatings produced by ionic co-discharge electrodeposition

Tay, S.L. and Yao, C. and Wei, X. and Chen, W. and Gao, W. (2014) Ni-Bi composite coatings produced by ionic co-discharge electrodeposition. Surface and Coatings Technology, 260. pp. 279-283. ISSN 0257-8972,

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Composite coatings are widely used in applications due to their excellent mechanical properties and long service life. Most recent studies have been conducted using the co-deposition of metal with oxides or ceramic particles to produce composite coatings. However, the investigation of the co-deposition of two phases is rare. In this research, composite coatings of two phases (Ni and NiBi) were synthesized by the co-ionic discharge method. Direct current was used to produce Ni and Ni-Bi composite coatings where the Ni coating was produced for comparison purposes. After adding Bi into Ni coating, a more compact coating with smoother surface was obtained. The hardness and wear resistance of the coatings were also improved due to the incorporation of Bi into the Ni coating matrix. There was no significant difference between the corrosion properties of Ni and Ni-Bi composite coatings. The levels of the corrosion current densities and corrosion potentials were in the same range. (C) 2014 Elsevier B.V. All rights reserved.

Item Type: Article
Additional Information: 41st International Conference on Metallurgical Coatings and Thin Films (ICMCTF), San Diego, CA, APR 28-MAY 02, 2014
Uncontrolled Keywords: Ni-Bi composite coating; Co-ionic discharge; Electroplating; Microhardness; Wear resistance; Potentio-dynamic
Subjects: Q Science > Q Science (General)
Depositing User: MR Faizal II H
Date Deposited: 29 Dec 2015 01:49
Last Modified: 19 Mar 2019 07:27

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