Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy
Abstract
The initial corrosion behavior of AZ63 magnesium alloy was investigated in 1, 3, 5 and 7 wt.% NaCl solutions by means of corrosion potential, linear polarization, electrochemical impedance spectroscopy, and polarization measurements, during exposure in the corrosion media. Results show that the increase in chloride concentration provokes an increase in the corrosion rate. Based on the obtained kinetics parameters the mechanisms of anodic dissolution and hydrogen evolution reactions were discussed, and kinetic models were proposed. It is concluded that anodic dissolution proceeds under Temkin conditions and hydrogen evolution reaction depends on the surface coverage of Mg(OH)2 species.
Keywords:
chloride / corrosion potential / kinetics / linear polarizatio / reaction orderSource:
Transactions of Nonferrous Metals Society of China (English Edition), 2022, 32, 4, 1133-1143Publisher:
- Nonferrous Metals Society of China
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200175 (Institute of Technical Sciences of SASA, Belgrade) (RS-200175)
DOI: 10.1016/S1003-6326(22)65861-8
ISSN: 1003-6326
WoS: 00083549250000
Scopus: 2-s2.0-85129923400
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Grgur, Branimir N. AU - Jugović, Branimir Z. AU - Gvozdenović, Milica M. PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5140 AB - The initial corrosion behavior of AZ63 magnesium alloy was investigated in 1, 3, 5 and 7 wt.% NaCl solutions by means of corrosion potential, linear polarization, electrochemical impedance spectroscopy, and polarization measurements, during exposure in the corrosion media. Results show that the increase in chloride concentration provokes an increase in the corrosion rate. Based on the obtained kinetics parameters the mechanisms of anodic dissolution and hydrogen evolution reactions were discussed, and kinetic models were proposed. It is concluded that anodic dissolution proceeds under Temkin conditions and hydrogen evolution reaction depends on the surface coverage of Mg(OH)2 species. PB - Nonferrous Metals Society of China T2 - Transactions of Nonferrous Metals Society of China (English Edition) T1 - Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy EP - 1143 IS - 4 SP - 1133 VL - 32 DO - 10.1016/S1003-6326(22)65861-8 ER -
@article{ author = "Grgur, Branimir N. and Jugović, Branimir Z. and Gvozdenović, Milica M.", year = "2022", abstract = "The initial corrosion behavior of AZ63 magnesium alloy was investigated in 1, 3, 5 and 7 wt.% NaCl solutions by means of corrosion potential, linear polarization, electrochemical impedance spectroscopy, and polarization measurements, during exposure in the corrosion media. Results show that the increase in chloride concentration provokes an increase in the corrosion rate. Based on the obtained kinetics parameters the mechanisms of anodic dissolution and hydrogen evolution reactions were discussed, and kinetic models were proposed. It is concluded that anodic dissolution proceeds under Temkin conditions and hydrogen evolution reaction depends on the surface coverage of Mg(OH)2 species.", publisher = "Nonferrous Metals Society of China", journal = "Transactions of Nonferrous Metals Society of China (English Edition)", title = "Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy", pages = "1143-1133", number = "4", volume = "32", doi = "10.1016/S1003-6326(22)65861-8" }
Grgur, B. N., Jugović, B. Z.,& Gvozdenović, M. M.. (2022). Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy. in Transactions of Nonferrous Metals Society of China (English Edition) Nonferrous Metals Society of China., 32(4), 1133-1143. https://doi.org/10.1016/S1003-6326(22)65861-8
Grgur BN, Jugović BZ, Gvozdenović MM. Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy. in Transactions of Nonferrous Metals Society of China (English Edition). 2022;32(4):1133-1143. doi:10.1016/S1003-6326(22)65861-8 .
Grgur, Branimir N., Jugović, Branimir Z., Gvozdenović, Milica M., "Influence of chloride ion concentration on initial corrosion of AZ63 magnesium alloy" in Transactions of Nonferrous Metals Society of China (English Edition), 32, no. 4 (2022):1133-1143, https://doi.org/10.1016/S1003-6326(22)65861-8 . .