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Shae KimKITECHSurface Oxide On Safety And Cleanliness Of Mg Alloys Intl Symp. on Next Generation Magnesium Alloys and Their Applications for Sustainable Development Back to Plenary Lectures » |
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). 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. |
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