Initial stages of corrosion within Mg-Zn-Y-Zr alloy in 1 g/l NaCl solution

Authors
Popov, I Starosvetsky, D Shechtman, D
Citation
I. Popov et al., Initial stages of corrosion within Mg-Zn-Y-Zr alloy in 1 g/l NaCl solution, J MATER SCI, 35(1), 2000, pp. 1-8
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS SCIENCE
ISSN journal
00222461 → ACNP
Volume
35
Issue
1
Year of publication
2000
Pages
1 - 8
Database
ISI
SICI code
0022-2461(200001)35:1<1:ISOCWM>2.0.ZU;2-6
Abstract
Corrosion behavior of as-cast and heat treated Mg-Zn-Zr-Y alloy was studied in 1 g/l NaCl solution. The as-cast alloy was the least resistant to pitti ng corrosion. Its Mg-Zn solid solution matrix was the structural constituen t responsible for corrosion susceptibility due to the presence of Zn-lean r egions. Homogenization of the Zn distribution within the matrix significant ly increased the corrosion resistance of the alloy. Grain boundaries, which contain intermetallic phases, were resistant to corrosion attack, thus imp eding corrosion propagation.