Improved corrosion resistance of extruded Mg–8Sn–1Zn–1Al alloy by microalloying with Mn

Citation data:

Scripta Materialia, ISSN: 1359-6462, Vol: 109, Page: 38-43

Publication Year:
2015
Usage 172
Abstract Views 172
Captures 17
Readers 17
Citations 15
Citation Indexes 15
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/17305
DOI:
10.1016/j.scriptamat.2015.07.013
Author(s):
Ha, Heon-Young; Kim, Hyeon Ju; Baek, Soo-Min; Kim, Beomcheol; Sohn, So-Dam; Shin, Hyung-Joon; Jeong, Hu Young; Park, Sung Hyuk; Yim, Chang Dong; You, Bong Sun; Lee, Jung Gu; Park, Sung Soo Show More Hide
Publisher(s):
Elsevier BV; PERGAMON-ELSEVIER SCIENCE LTD
Tags:
Materials Science; Physics and Astronomy; Magnesium alloy; Extrusion; Intermetallic particle; Corrosion
article description
We report that microalloying with Mn substantially enhances the corrosion resistance of extruded Mg–8Sn–1Zn–1Al alloy. The corrosion rates, measured by immersion tests in 0.6 M NaCl solution at 25 °C, were 4.37 and 246.72 mm y −1 for the quaternary alloys with and without 0.1 wt% Mn, respectively. The enhanced corrosion resistance due to Mn microalloying is attributed to reduced H 2 evolution rate, attained by a change in the type of Al-containing intermetallic particles, which led to a reduction of the particles’ electrochemical nobility.