Effect of H3Po3 and Nah2Po2 in the electrolyte on the composition and microstructure of Ni-Co-P alloys

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creativework.keywordsElectrodeposition, Metal alloys, Microstructure, Morphology, Ni-Co-P layers
creativework.publisherUniversity of Chemical Technology and Metallurgyjournal@uctm.eduen
dc.contributor.authorIgnatova K.
dc.contributor.authorAlakushev M.
dc.contributor.authorKozhukharov S.
dc.contributor.authorMarcheva Y.
dc.contributor.authorVladimirova S.
dc.contributor.authorAvdeev G.
dc.date.accessioned2024-07-16T11:16:49Z
dc.date.accessioned2024-07-16T11:18:57Z
dc.date.available2024-07-16T11:16:49Z
dc.date.available2024-07-16T11:18:57Z
dc.date.issued2019-01-01
dc.description.abstractThe effect of two phosphorus-containing additives (phosphorous acid, H3PO3 and sodium hypophosphite, NaH-2PO2) in modified Watt's electrolyte (pH = 2; 80°S) on the deposition kinetics, morphology, component and phase composition of Ni-Co-P coatings was studied. When only one of the studied additives is present in the solution, the P content in the coatings reaches maximum of 15 % and their structure is amorphous. The P and Ni incorporation in the coatings is facilitated when the electrolytes with prevailing concentrations of H3PO3 are used. The maximal P content (over 30 %) in the coatings was reached when both additives were present in the electrolyte. These coatings possess mixed structure with nano-dimensional amorphous phase and crystal hexagonal phase of solid solutions Ni2P and Ni2P-Co2P. The increasing of the current density causes P content decrement and the resulting crystal phase is tetragonal, composed by solid solutions of Ni3P and Ni3P-Co3P.
dc.identifier.issn1314-7978
dc.identifier.issn1314-7471
dc.identifier.scopusSCOPUS_ID:85076590786en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/1267
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85076590786&origin=inward
dc.titleEffect of H3Po3 and Nah2Po2 in the electrolyte on the composition and microstructure of Ni-Co-P alloys
dc.typeArticle
oaire.citation.issue6
oaire.citation.volume54
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