Influence of butyne-2-diol 1,4 in nickel electrocrystallization under pulse reversed current regime

Kotzia, F; Kollia, C; Spyrellis, N

dc.contributor.author	Kotzia, F	en
dc.contributor.author	Kollia, C	en
dc.contributor.author	Spyrellis, N	en
dc.date.accessioned	2014-03-01T01:09:25Z
dc.date.available	2014-03-01T01:09:25Z
dc.date.issued	1993	en
dc.identifier.issn	0020-2967	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10975
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0027541187&partnerID=40&md5=3671359eb16c557c0cd8129645b20cf8	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.other	Nickel alloys	en
dc.subject.other	Nickel electrocrystallization	en
dc.subject.other	Pulse reversed current regime	en
dc.subject.other	Watts type bath	en
dc.subject.other	Electroless plating	en
dc.title	Influence of butyne-2-diol 1,4 in nickel electrocrystallization under pulse reversed current regime	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	The influence of the two important parameters of pulse reversed current (PRC) technique, i.e. the pulse frequency (nu) and the cathodic duly cycle (theta), and of the presence of butyne-2-diol 1,4 (BD) in a Watts type bath were examined, in nickel electrocrystallization. The fibre textures of nickel electrodeposits grown under specific conditions were studied by X-ray diffraction and the textural modifications were depicted in several diagrams. The addition of BD where the electrolyte pH is 4.5, reinforces the inhibition phenomena occurring by the application of PRC, consuming the hydrogen produced during the electrodeposition; thus it causes a pH rise near the cathode, assists the formation of Ni(OH)2 and leads to more inhibited modes of growth. A significant decrease of the pH (to 1.5) inverts the phenomenon: the additive seems to hinder the inhibitors' action, acting itself like an inhibitor of the dissolution, thus the crystallites grow more uninhibited from the dissolution products and the most free modes of growth predominate over the others.	en
heal.publisher	Publ by Inst of Metal Finishing, Birmingham, United Kingdom	en
heal.journalName	Transactions of the Institute of Metal Finishing	en
dc.identifier.isi	ISI:A1993KN32800008	en
dc.identifier.volume	71	en
dc.identifier.issue	pt 1	en
dc.identifier.spage	34	en
dc.identifier.epage	36	en