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Electrodeposition and tribological characterisation of nickel nanocomposite coatings reinforced with nanotubular titanates
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Low, C. T. J., Bello, J. O., Wharton, J. A., Wood, R. J. K., Stokes, K. R. and Walsh, F. C. (2015) Electrodeposition and tribological characterisation of nickel nanocomposite coatings reinforced with nanotubular titanates. Surface and Coatings Technology, 205 (7). pp. 1856-1863. doi:10.1016/j.surfcoat.2010.08.054 ISSN 0257-8972.
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Official URL: http://dx.doi.org/10.1016/j.surfcoat.2010.08.054
Abstract
Metal nanocomposite nickel coatings reinforced with regularly shaped nanotubular titanates (multi-layered wall structure with ca. 5 nm internal diameter and 30 to 500 nm tube length) were electrodeposited from a modified Watts nickel electrolyte. Tribological properties of the coatings are characterised via measurements of the coating hardness, surface friction, wear rate and elastic modulus. Surface microstructures of the coatings were imaged (SEM and TEM analyses). The nanotubular titanates were shown to be embedded within the bulk of the coating and some particles protruded from the top surface. The nanotubular titanates in the nickel coating acted akin to a cross-linked and mesh-like matrix to enhance the dispersion-strengthening mechanism against external load. Nanocomposite nickel coatings reinforced with nanotubular titanates have shown (a) ~ 22% reduction in surface friction against a spherical diamond tip, (b) ~ 29% enhancement in wear resistance in a 3-body slurry abrasive wear test (steel counter body and 5 μm SiC particles), (c) ~ 102% improvement in coating hardness and (d) ~ 26% improvement in elastic modulus when compared with a nickel coating containing irregularly shaped nanosized titanium dioxide particles.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Surface and Coatings Technology | ||||
Publisher: | Elsevier S.A. | ||||
ISSN: | 0257-8972 | ||||
Official Date: | December 2015 | ||||
Dates: |
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Volume: | 205 | ||||
Number: | 7 | ||||
Page Range: | pp. 1856-1863 | ||||
DOI: | 10.1016/j.surfcoat.2010.08.054 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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