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Titolo:
New insight into the anomalous codeposition of alloys
Autore:
Li, ZL; Cai, JL; Zhou, SM;
Indirizzi:
Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, PeoplesR China Xiamen Univ Xiamen Peoples R China 361005 Xiamen 361005, PeoplesR China Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China Xiamen Univ Xiamen Peoples R China 361005 Xiamen 361005, Peoples R China
Titolo Testata:
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
, volume: 77, anno: 1999,
parte:, 4
pagine: 149 - 151
SICI:
0020-2967(199907)77:<149:NIITAC>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICKEL-IRON; ZINC-ALLOYS; ELECTRODEPOSITION; COBALT; COATINGS; MODEL;
Keywords:
electrodeposition; electroplating; anomalous codeposition; model;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Li, ZL Xiamen Univ, State Key Lab Phys Chem Solid Surface, Xiamen 361005, PeoplesR China Xiamen Univ Xiamen Peoples R China 361005 361005, PeoplesR China
Citazione:
Z.L. Li et al., "New insight into the anomalous codeposition of alloys", T I MET FIN, 77, 1999, pp. 149-151

Abstract

A new model for the anomalous codeposition of alloys is based on the kinetic characteristics of metal electrodeposition and th effect of hydrogen evolution accompanying the deposition. The less noble metal has intrinsically faster kinetics and so tis deposition rate can be controlled manly by diffusion mass transfer in a certain range of over potentials; the convection induced by hydrogen evolution can speed up the relative deposition rate of this less noble metal when it is mainly diffusion-influenced. In contrast with previous models, such as the hydroxide suppression hypothesis, the monohydroxide-discharge-controlled mechanism, and the competitive adsorption effect, our model can explain naturally and completely anomalous codeposition, i.e. the preferential deposition of the less-noble metal, oa problem in alloy electrodeposition that has persisted for a century.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 23:40:15