EFFECT OF GRAIN-BOUNDARY CORROSION ON IMPEDANCE CHARACTERISTICS OF ANALUMINUM-ZINC-INDIUM ALLOY IN 3.5-PERCENT SODIUM-CHLORIDE SOLUTION

Authors
VENUGOPAL A ANGAL RD RAJA VS
Citation
A. Venugopal et al., EFFECT OF GRAIN-BOUNDARY CORROSION ON IMPEDANCE CHARACTERISTICS OF ANALUMINUM-ZINC-INDIUM ALLOY IN 3.5-PERCENT SODIUM-CHLORIDE SOLUTION, Corrosion, 52(2), 1996, pp. 138-142
Citations number
19
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Corrosion → ACNP
ISSN journal
00109312
Volume
52
Issue
2
Year of publication
1996
Pages
138 - 142
Database
ISI
SICI code
0010-9312(1996)52:2<138:EOGCOI>2.0.ZU;2-H
Abstract
Electrochemical impedance spectroscopy (EIS) was used to understand th e dissolution behavior of an Al-Zn-In alloy in 3.5% sodium chloride (N aCl) solution as a function of time after the alloy was subjected to g alvanostatic dissolution. Compared to optical microscopy, the changing trend in impedance spectra reflected the preferential dissolution of the alloy along the grain boundaries, The usefulness of EIS as a tool to indicate the current efficiency loss from grain-boundary attack was illustrated.