Affection of Cu content on the phase evolution during the dealloying of Ag-Cu alloys using electrochemical noise with Hilbert spectra analysis

Y. Zhao; X. Wang; J.C. Huang; X. Chen; L. Cao; M. Mu

doi:10.1016/j.matlet.2016.07.116

Author(s)

Y. Zhao
X. Wang
X. Chen
L. Cao
M. Mu

Detail(s)

Original language	English
Pages (from-to)	165-169
Journal / Publication	Materials Letters
Volume	183
Online published	25 Jul 2016
Publication status	Published - 15 Nov 2016
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.matlet.2016.07.116 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84979582309&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(d4865ef0-3e0e-4f58-bbea-18120edb87ac).html

Abstract

The affection of Cu content on the phase evolution of Ag-Cu alloys was investigated by electrochemical noise (EN) with Hilbert spectra analysis. The results showed that the dealloying corrosion rate decreased and contribution of the transient shift from low-frequency parts (diffusion process) to the high-frequency parts (dissolution process) increased with the content of Cu increasing. Due to the increasement of Cu content, amounts of the Ag₂Cu phases would be promoted. Ag₂Cu phases had higher potential contrast with Cu phases and promoted the formation of different phase boundary, and different phase boundary would inhibit the diffusion of Ag atom. Thus, the hypoeutectic Ag₁₅Cu₈₅ alloys performed highest dealloying corrosion rate and the contribution of the transient at the highest-frequency parts followed by Ag₂₀Cu₈₀ and Ag₂₅Cu₇₅ alloys.

Research Area(s)

Copper, Corrosion, Diffusion, Electrochemical noise, Hilbert spectra, Silver

Citation Format(s)

[ RIS ] [ BibTeX ]

Affection of Cu content on the phase evolution during the dealloying of Ag-Cu alloys using electrochemical noise with Hilbert spectra analysis. / Zhao, Y.; Wang, X.; Huang, J.C. et al.
In: Materials Letters, Vol. 183, 15.11.2016, p. 165-169.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Zhao, Y, Wang, X, Huang, JC, Chen, X, Cao, L & Mu, M 2016, 'Affection of Cu content on the phase evolution during the dealloying of Ag-Cu alloys using electrochemical noise with Hilbert spectra analysis', Materials Letters, vol. 183, pp. 165-169. https://doi.org/10.1016/j.matlet.2016.07.116

Zhao, Y., Wang, X., Huang, J. C., Chen, X., Cao, L., & Mu, M. (2016). Affection of Cu content on the phase evolution during the dealloying of Ag-Cu alloys using electrochemical noise with Hilbert spectra analysis. Materials Letters, 183, 165-169. https://doi.org/10.1016/j.matlet.2016.07.116

Zhao Y, Wang X, Huang JC, Chen X, Cao L, Mu M. Affection of Cu content on the phase evolution during the dealloying of Ag-Cu alloys using electrochemical noise with Hilbert spectra analysis. Materials Letters. 2016 Nov 15;183:165-169. Epub 2016 Jul 25. doi: 10.1016/j.matlet.2016.07.116

Zhao, Y. ; Wang, X. ; Huang, J.C. et al. / Affection of Cu content on the phase evolution during the dealloying of Ag-Cu alloys using electrochemical noise with Hilbert spectra analysis. In: Materials Letters. 2016 ; Vol. 183. pp. 165-169.