Universität zu Köln

Miguel, F. L., Mueller, R., Mathur, S. and Muecklich, F. (2015). Microstructure and mechanical properties of electrodeposited Ni and Ni-matrix-nanocomposite thin films. Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 646. S. 254 - 263. LAUSANNE: ELSEVIER SCIENCE SA. ISSN 1873-4936

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Abstract

Ni and Ni-matrix-nanocomposite thin films were produced by constant-current electrodeposition from a sulphamate bath. The composite consisted of an array of Ag-coated SnO2 nanowires grown onto a substrate, around which the Ni matrix was deposited. The hardness and Young's modulus of the films were studied by microindentation, showing a strengthening of 66% for the composite with respect to Ni films produced using the exact same bath and deposition parameters as the composite's matrix. A straightforward method for evaluating the stress-strain relationship from indentation data based on analytical and computational models available in the literature was proposed and evaluated. A thorough microstructure characterisation by scanning electron microscopy together with electron backscatter diffraction was conducted to assist in the interpretation of the mechanical response of the films. The Ag-SnO2 in the composite prevented the development of texture and was responsible for a grain size reduction of 85%. (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 Mathur, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Muecklich, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-389826
DOI:	10.1016/j.msea.2015.08.069
Journal or Publication Title:	Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
Volume:	646
Page Range:	S. 254 - 263
Date:	2015
Publisher:	ELSEVIER SCIENCE SA
Place of Publication:	LAUSANNE
ISSN:	1873-4936
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HALL-PETCH RELATIONSHIP; TRIBOLOGICAL BEHAVIOR; INDENTATION HARDNESS; GRAIN-GROWTH; NANOCRYSTALLINE; TEXTURE; NICKEL; STRENGTH; DEFORMATION; PLASTICITY Multiple languages Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/38982