Young's modulus, hardness and scratch adhesion of Ni-P-W multilayered alloy coatings produced by pulse plating

Papachristos, VD; Panagopoulos, CN; Christoffersen, LW; Markaki, A

dc.contributor.author	Papachristos, VD	en
dc.contributor.author	Panagopoulos, CN	en
dc.contributor.author	Christoffersen, LW	en
dc.contributor.author	Markaki, A	en
dc.date.accessioned	2014-03-01T01:17:20Z
dc.date.available	2014-03-01T01:17:20Z
dc.date.issued	2001	en
dc.identifier.issn	0040-6090	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14461
dc.subject	Adhesion	en
dc.subject	Hardness	en
dc.subject	Multilayers	en
dc.subject	Young's modulus	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Adhesion	en
dc.subject.other	Brittleness	en
dc.subject.other	Deformation	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Electroplating	en
dc.subject.other	Hardness	en
dc.subject.other	Multilayers	en
dc.subject.other	Nickel alloys	en
dc.subject.other	Alloy coatings	en
dc.subject.other	Pulse plating	en
dc.subject.other	Inorganic coatings	en
dc.title	Young's modulus, hardness and scratch adhesion of Ni-P-W multilayered alloy coatings produced by pulse plating	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0040-6090(01)01223-8	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0040-6090(01)01223-8	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The effect of layering on Young's modulus, hardness and deformation behaviour of Ni-P-W multilayered alloy coatings in a scratch adhesion test was studied. The coatings were deposited on copper substrates by electro-deposition and the wavelengths studied were 8-4000 nm. The Young's moduli of the amorphous multilayered Ni-P-W coatings, measured by an acoustic-wave resonance method, are higher than the Young's modulus of crystalline nickel. Their hardness was found to increase with decreasing wavelength of the coatings, the increase being more pronounced for wavelengths below 120 nm. The cohesive load of the multilayered coatings ranges from 5 to 16 N, while the critical load range for coating detachment in scratch adhesion tests was found to be 50-75 N. The values of adhesive and cohesive loads seem to be independent from the wave-length of the Ni-P-W coatings. The failure modes observed in the scratch tracks of the Ni-P-W multilayered coatings are common in every coating in the scratch tests under increasing load, and they are a result of substrate deformation and coating brittleness. (C) 2001 Elsevier Science B.V All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Thin Solid Films	en
dc.identifier.doi	10.1016/S0040-6090(01)01223-8	en
dc.identifier.isi	ISI:000171742900024	en
dc.identifier.volume	396	en
dc.identifier.issue	1-2	en
dc.identifier.spage	173	en
dc.identifier.epage	182	en