Electrochemical investigation of Ni−P autocatalytic deposition in ammoniacal solutions
Identifieur interne : 000465 ( France/Analysis ); précédent : 000464; suivant : 000466Electrochemical investigation of Ni−P autocatalytic deposition in ammoniacal solutions
Auteurs : M. Ebn Touhami [Maroc] ; M. Cherkaoui [Maroc] ; A. Srhiri [Maroc] ; A. Ben Bachir [Maroc] ; E. Chassaing [France]Source :
- Journal of Applied Electrochemistry [ 0021-891X ] ; 1996-05-01.
Abstract
Abstract: The kinetics of Ni−P autocatalytic deposition in ammoniacal solutions was investigated by means of cyclic voltammetry and electrochemical impedance spectroscopy. The effect of the solution constituents (hypophosphite, nickel salt and pH) was examined. Strong interactions between the cathodic and anodic processes occur. The metal discharge is enhanced by the oxidation of hypophosphite, which is the predominant reaction in this process. The nickel deposition also affects the anodic process. With increasing pH the nickel discharge is progressively inhibited due to the change in the nature of the Ni(II) complexes. In contrast, in the presence of Ni(II) species, due to the opposite effect of the two partial processes, the plating rate increases for pH values up to 9 and then decreases for higher pH values.
Url:
DOI: 10.1007/BF01021971
Affiliations:
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ISTEX:122E005A909DB6AB15A19A29346F33338563AF26Le document en format XML
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Urbain, 94407, Vitry-sur-Seine Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Vitry-sur-Seine</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Applied Electrochemistry</title><title level="j" type="abbrev">J Appl Electrochem</title><idno type="ISSN">0021-891X</idno><idno type="eISSN">1572-8838</idno><imprint><publisher>Kluwer Academic Publishers</publisher><pubPlace>Dordrecht</pubPlace><date type="published" when="1996-05-01">1996-05-01</date><biblScope unit="volume">26</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="487">487</biblScope><biblScope unit="page" to="491">491</biblScope></imprint><idno type="ISSN">0021-891X</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-891X</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The kinetics of Ni−P autocatalytic deposition in ammoniacal solutions was investigated by means of cyclic voltammetry and electrochemical impedance spectroscopy. The effect of the solution constituents (hypophosphite, nickel salt and pH) was examined. Strong interactions between the cathodic and anodic processes occur. The metal discharge is enhanced by the oxidation of hypophosphite, which is the predominant reaction in this process. The nickel deposition also affects the anodic process. With increasing pH the nickel discharge is progressively inhibited due to the change in the nature of the Ni(II) complexes. In contrast, in the presence of Ni(II) species, due to the opposite effect of the two partial processes, the plating rate increases for pH values up to 9 and then decreases for higher pH values.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Île-de-France</li></region><settlement><li>Vitry-sur-Seine</li></settlement></list><tree><country name="Maroc"><noRegion><name sortKey="Touhami, M Ebn" sort="Touhami, M Ebn" uniqKey="Touhami M" first="M. Ebn" last="Touhami">M. 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