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- Jeong, Hu Young
- UCRF Electron Microscopy group
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Effect of alloyed Ca on the microstructure and corrosion properties of extruded AZ61 Mg alloy
- Author(s)
- Baek, Soo-Min, Kim, Hyeon Ju, Jeong, Hu Young, Sohn, So-Dam, Shin, Hyung-Joon, Choi, Kyung-Jin, Lee, Ki-Suk, Lee, Jung Gu, Yim, Chang Dong, You, Bong Sun, Ha, Heon-Young, Park, Sung Soo
- Issued Date
- 2016-11
- Citation
- CORROSION SCIENCE, v.112, pp.44 - 53
- Abstract
- Microstructure and corrosion properties of extruded AZ61 Mg alloys with varying Ca contents were investigated. Microstructure of the extruded AZ61 alloy consisted of a-Mg grains and Al8Mn5 particles. Alloying with 0.1-0.5 wt% Ca to the AZ61 alloy resulted in the additional presehce of (Mg,Al)(2)Ca particles in the extruded microstructure. In 0.6 M NaCl solution at 25 degrees C, the extruded AZ61 alloys with 0.1-0.5 wt% Ca showed corrosion rates over 2 times faster than that of the AZ61 alloy without Ca addition. Such deteriorated corrosion resistance due to Ca addition is discussed in terms of passivation and microgalvanic corrosion.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- ISSN
- 0010-938X
- Keyword (Author)
- Magnesium, Alloy, Weight loss, Pitting corrosion
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