Universität zu Köln

Miguel, F. L., Mueller, R., Rosenkranz, A., Mathur, S. and Muecklich, F. (2016). Analysis and modelling of the dry-sliding friction and wear behaviour of electrodeposited Ni and Ni-matrix-nanocomposite films. Wear, 346. S. 87 - 99. LAUSANNE: ELSEVIER SCIENCE SA. ISSN 1873-2577

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Abstract

The work here described aimed to assess the tribological behaviour of a Ni-matrix-nanocomposite film and to gain understanding of the role that the reinforcing phases play in it. The composite consisted of an array of Ag-coated SnO2 nanowires grown onto a substrate, around which the Ni matrix was galva-nostatically deposited. Friction and wear were evaluated under dry sliding conditions using a linearly reciprocating ball-on-flat setup, with a diamond ball of 5.8 mu m radius as counterbody, subjected to loads ranging from 5 to 30 mN. The surface and cross section of the wear tracks were characterised by scanning electron microscopy, energy-dispersive X-ray spectroscopy and white light interferometry. Ploughing-type abrasive wear was observed, with load-dependent dynamic friction coefficients, being this attributed to scale effect. Numerical models were developed for the analysis of wear volume and wear rate, as function of film hardness, applied load and wear track length. Due to their higher hardness, the composite films exhibited superior wear resistance with respect to Ni films produced using the exact same bath and deposition parameters as the composite's matrix. This was evidenced by reductions of up to 74 and 65% in wear volume and rate, respectively. (C) 2015 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Miguel, F. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rosenkranz, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Muecklich, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-287248
DOI:	10.1016/j.wear.2015.11.006
Journal or Publication Title:	Wear
Volume:	346
Page Range:	S. 87 - 99
Date:	2016
Publisher:	ELSEVIER SCIENCE SA
Place of Publication:	LAUSANNE
ISSN:	1873-2577
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language STRAIN GRADIENT PLASTICITY; SINGLE-ASPERITY CONTACTS; NANOCRYSTALLINE NICKEL; GRAIN-SIZE; TRIBOLOGICAL BEHAVIOR; FLASH TEMPERATURES; DYNAMIC RECRYSTALLIZATION; DEFORMATION; COATINGS; MICROSTRUCTURE Multiple languages Engineering, Mechanical; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28724