2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 14: Next Generation Magnesium Alloys and Their Applications for Sustainable Development

Editors:F. Kongoli, Y. Kawamura, E. Aifantis, D. Shih
Publisher:Flogen Star OUTREACH
Publication Year:2019
Pages:82 pages
ISBN:978-1-989820-13-1
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Surface Oxide on Safety and Cleanliness of Mg Alloys

    Shae Kim1;
    1KITECH, Incheon, Republic of South Korea;
    Type of Paper: Invited
    Id Paper: 311
    Topic: 60

    Abstract:

    This paper will address the well-known, but practically ignored issue of unstable, thick and porous surface oxide layers of Mg alloys in terms of safety for manufacturing and applications and cleanliness for molten metal and manufactured parts. The unstable and porous oxide layers are solely responsible for the inherent obstacles of Mg alloys such as safety (burning), health (Beryllium and SO2 gas), and environment (SF6 gas). Mg alloys are also the main source for poor cleanliness (high inclusion level) which in turn greatly deteriorates fluidity and ductility. ECO-Mg alloys will be introduced as one practical possibility to produce the stable surface oxide layer through alloy design. Equal emphasis will also be placed on the importance of the stable oxide layer for controlling cleanliness, therefore improving fluidity (thinner and more complex consolidated die castings) and ductility (overcoming property or maintaining original property in other words).

    Keywords:

    Applications and transition methodology;

    References:

    [1] Kim, S. K. Design and Development of High-Performance ECO-Mg Alloys. In Magnesium Alloys - Design, Processing and Properties; Czerwinski, F., Ed.; InTech: Croatia, 2011; 431-468.
    [2] Jeong, J. W.; Im, J. S.; Song, K.; Kwon, M. H.; Kim, S. K.; Kang, Y. B.; Oh, S. H. Transmission electron microscopy and thermodynamic studies of CaO-added AZ31 Mg alloys. Acta Mater 2013, 61, 3267-3277.
    [3] Ha, S. H.; Lee, J. K.; Kim, S. K. Effect of CaO on Oxidation Resistance and Microstructure of Pure Mg. Mater Trans 2008, 49 (5), 1081-1083.

    Cite this article as:

    Kim S. (2019). Surface Oxide on Safety and Cleanliness of Mg Alloys. In F. Kongoli, Y. Kawamura, E. Aifantis, D. Shih (Eds.), Sustainable Industrial Processing Summit SIPS2019 Volume 14: Next Generation Magnesium Alloys and Their Applications for Sustainable Development (pp. 79-80). Montreal, Canada: FLOGEN Star Outreach