Electrodeposition and tribological characterisation of nickel nanocomposite coatings reinforced with nanotubular titanates
Electrodeposition and tribological characterisation of nickel nanocomposite coatings reinforced with nanotubular titanates
Metal nanocomposite nickel coatings reinforced with regularly shaped nanotubular titanates (multi-layered wall structure with c.a. 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 by measuring the coating hardness, surface friction, wear rate and elastic modulus. Surface microstructures of the coatings were imaged (SEM and TEM analysis). 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 mm SiC particles), (c) ~50 % improvement in coating hardness and (d) ~21 % improvement in elastic modulus when compared with a nickel coating containing irregularly shaped nanosized titanium dioxide particles.
coating, electrodeposition, nanocomposite, nanotubular titanates, tribology
1856-1863
Low, C.T.J.
e993d0ca-2b64-424b-9535-20bc8b78415f
Bello, J.O.
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Wharton, J.A.
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Wood, R.J.K.
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Stokes, K.R.
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Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
25 December 2010
Low, C.T.J.
e993d0ca-2b64-424b-9535-20bc8b78415f
Bello, J.O.
a9bdc019-0457-4fe9-89c9-17ab947f1eab
Wharton, J.A.
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Wood, R.J.K.
d9523d31-41a8-459a-8831-70e29ffe8a73
Stokes, K.R.
5fb4e7f7-2f7e-4e6e-a045-6d7690626695
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Low, C.T.J., Bello, J.O., Wharton, J.A., Wood, R.J.K., Stokes, K.R. and Walsh, F.C.
(2010)
Electrodeposition and tribological characterisation of nickel nanocomposite coatings reinforced with nanotubular titanates.
Surface and Coatings Technology, 205 (7), .
(doi:10.1016/j.surfcoat.2010.08.054).
Abstract
Metal nanocomposite nickel coatings reinforced with regularly shaped nanotubular titanates (multi-layered wall structure with c.a. 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 by measuring the coating hardness, surface friction, wear rate and elastic modulus. Surface microstructures of the coatings were imaged (SEM and TEM analysis). 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 mm SiC particles), (c) ~50 % improvement in coating hardness and (d) ~21 % improvement in elastic modulus when compared with a nickel coating containing irregularly shaped nanosized titanium dioxide particles.
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Published date: 25 December 2010
Additional Information:
Affiliations: C.T.J. Low1*??, J.O. Bello2, J.A. Wharton2, R.J.K. Wood2, K.R. Stokes3, F.C. Walsh1
1Electrochemical Engineering Laboratory, School of Engineering Sciences, University of
Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom.
2national Centre for Advanced Tribology at Southampton (nCATS), School of Engineering
Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom.
3Physical Sciences Department, DSTL, Porton Down, Salisbury, SP4 0JQ, United Kingdom.
Keywords:
coating, electrodeposition, nanocomposite, nanotubular titanates, tribology
Identifiers
Local EPrints ID: 162493
URI: http://eprints.soton.ac.uk/id/eprint/162493
ISSN: 0257-8972
PURE UUID: c754aa81-09ae-42e4-8300-ddee344dc520
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Date deposited: 03 Sep 2010 08:14
Last modified: 14 Mar 2024 02:41
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C.T.J. Low
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