Pulse electrolysis for the production of hard Ni/ZrO2 composite coatings

Dardavila, MM; Kollia, C

dc.contributor.author	Dardavila, MM	en
dc.contributor.author	Kollia, C	en
dc.date.accessioned	2014-03-01T02:53:26Z
dc.date.available	2014-03-01T02:53:26Z
dc.date.issued	2011	en
dc.identifier.issn	10120386	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36317
dc.subject	Metal matrix composite electrocoatings	en
dc.subject	Nickel	en
dc.subject	Pulse electrolysis	en
dc.subject	Textural modification	en
dc.subject	Vickers microhardness	en
dc.subject	ZrO 2	en
dc.subject.other	Electrocoatings	en
dc.subject.other	Pulse electrolysis	en
dc.subject.other	Textural modifications	en
dc.subject.other	Vickers microhardness	en
dc.subject.other	ZrO	en
dc.subject.other	Cladding (coating)	en
dc.subject.other	Coatings	en
dc.subject.other	Diffusion in solids	en
dc.subject.other	Electrodeposition	en
dc.subject.other	Electrolysis	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Metallic matrix composites	en
dc.subject.other	Microhardness	en
dc.subject.other	Nickel	en
dc.subject.other	Powder metals	en
dc.subject.other	Titanium dioxide	en
dc.subject.other	Zirconium alloys	en
dc.subject.other	Composite coatings	en
dc.title	Pulse electrolysis for the production of hard Ni/ZrO2 composite coatings	en
heal.type	conferenceItem	en
heal.identifier.primary	10.4028/www.scientific.net/DDF.312-315.235	en
heal.identifier.secondary	http://dx.doi.org/10.4028/www.scientific.net/DDF.312-315.235	en
heal.publicationDate	2011	en
heal.abstract	Composite electrodeposition technology is one of the methods used to fabricate metal matrix composite coating materials. One of the most challenging issues concerns the addition of homogeneously suspending oxide powders, such as TiO2 and ZrO2 in the electrolyte, in order to result in the uniform dispersion of the oxide powders in the metal matrix [1]. Moreover, the application of a current periodically varied by time during electrodeposition, i.e. pulse current (p.c.) instead of the commonly used direct current (d.c.) has been concluded that leads to the preparation of surfaces with well-defined properties [2]. It is also well known that composite electrodeposits of Ni/metal oxides have remarkable mechanical and anticorrosion properties [3]. In this work nickel matrix composite electrocoatings including ZrO2 micron-sized particles were produced from an additive free Watts type bath under strong agitation conditions applying d.c. and p.c. regime. The synergetic action of the pulse application, the incorporation of the particles into the nickel matrix and the applied hydrodynamic conditions on the crystalline development, the morphological characteristics, the microhardness and the roughness of the composite electrocoatings, were studied. © (2011) Trans Tech Publications.	en
heal.journalName	Defect and Diffusion Forum	en
dc.identifier.doi	10.4028/www.scientific.net/DDF.312-315.235	en
dc.identifier.volume	312-315	en
dc.identifier.spage	235	en
dc.identifier.epage	239	en