Corrosion of electroless nickel plated electrical contacts

Vassiliou, P; Novacovich, J; Dervos, CT; Kollia, C

dc.contributor.author	Vassiliou, P	en
dc.contributor.author	Novacovich, J	en
dc.contributor.author	Dervos, CT	en
dc.contributor.author	Kollia, C	en
dc.date.accessioned	2014-03-01T01:20:04Z
dc.date.available	2014-03-01T01:20:04Z
dc.date.issued	2004	en
dc.identifier.issn	0334-6005	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15831
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-1642323929&partnerID=40&md5=50004a4e296acbb8f24856a919c911cc	en
dc.subject.classification	Electrochemistry	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.other	Age hardening	en
dc.subject.other	Brass plating	en
dc.subject.other	Chromium plating	en
dc.subject.other	Corrosion resistance	en
dc.subject.other	Crystal structure	en
dc.subject.other	Electric contacts	en
dc.subject.other	Hardness	en
dc.subject.other	Joints (structural components)	en
dc.subject.other	Nickel plating	en
dc.subject.other	Polarization	en
dc.subject.other	Recrystallization (metallurgy)	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Steel heat treatment	en
dc.subject.other	Vacuum	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Corrosion aging tests	en
dc.subject.other	Steel joints	en
dc.subject.other	Electroless plating	en
dc.title	Corrosion of electroless nickel plated electrical contacts	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	Electroless nickel plating has been tried on steel and brass substrates for potential use as low power electrical contacts and connectors. By selected conditions of heat treatment in a high vacuum environment the plating can produce chromium equivalent hardness without the effluents of the hard chromium plating process. The resulting surfaces were examined and characterized under an optical and a scanning electron microscope. XRD analysis was also performed to investigate re-crystallization effects, especially after heat treatment. The fabricated contact materials were also tested under corrosion conditions and linear polarization measurements were performed on them. Finally, to indicate the significance of the substrate material, semispherical nickel plated brass and steel joints were tested under the simultaneous application of a mechanical and an electrical contact load exceeding 10,000 duty cycles. The contact resistance was also monitored during the computer controlled contact make-break operations. The results show that, after heat treatment in a high vacuum environment (10(-6) mbar), the plating acquires a crystalline structure, with very good adhesion to the substrate material. In addition it is characterized with good electrical properties during corrosion aging accelerated tests.	en
heal.publisher	FREUND PUBLISHING HOUSE LTD	en
heal.journalName	Corrosion Reviews	en
dc.identifier.isi	ISI:000220374000003	en
dc.identifier.volume	22	en
dc.identifier.issue	1	en
dc.identifier.spage	19	en
dc.identifier.epage	38	en