Browse > Article

The Effect of $C_2Cl_6$ Addition on Surface Ignition and Oxidation of Molten AM100A Mg alloy  

Choi, Seung-Hwa (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Kim, Dae-Hwan (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Kim, Hee-Kyung (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Shim, Sung-Young (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Lim, Su-Gun (i-Cube Center, Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of Korea Foundry Society / v.30, no.6, 2010 , pp. 231-234 More about this Journal
Abstract
The effect of $C_2Cl_6$ for preventing to the surface oxidation and ignition of molten Mg alloy was studied with metallographic analysis, X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. The alloy used for this study was AM100A Mg casting alloy with high strength. In order to investigate the surface protective characteristic of this molten alloy by $C_2Cl_6$ addition, we added them into molten AM100A alloy at $700^{\circ}C$ and then the melts were slowly cooled under a protective atmosphere of air containing Ar gas and $C_2Cl_6$ flux addition. The result found that the surface oxidation and ignition reaction of molten AM100A Mg alloy by adding $C_2Cl_6$ flux was more slowly occurred than that of the only a protective atmosphere of containing Ar gas with increasing time. This result was due to a dense protective film formed containing $MgCl_2$ on surface of molten Mg alloy during casting and solidification. The $MgCl_2$ was formed by a reaction of $C_2Cl_6$ with molten Mg.
Keywords
Ignition; Protective film; $C_2Cl_6$ flux;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Nigel Ricketts, Simon Cashion, Rob Bailey: Proc. of the Light Metals Technology Conference, "INDUSTRIAL TRIALS WITH THE AMCover COVER GAS SYSTEM FOR MAGNESIUM MELT PROTECTION", (2003)
2 W. Ha, Y. -J. Kim: J. Alloys Compd. "Effects of cover gases on melt protection of Mg alloys", 422 (2006) 208-213   DOI   ScienceOn
3 Friedrich, Mordike, Magnesium Technology, Springer, (2006)
4 MM Avedesian and H. Baker: ASM international, ASM Specialty Handbook Magnesium and Magnesium alloys, (1999)
5 Y. Kozima: The Japan Magnesium Asso., "Handbook Advanced Magnesium Technolgy", (2000)
6 S. P. Cashion, N. J. Ricketts, P. C. Hayes: J. Light Metals, "The mechanism of protection of molten magnesium by cover gas mixtures containing sulphur hexafluoride", 2 (2002) 43-47   DOI   ScienceOn
7 J. -K. Lee, S. -H. Kim, H. -H. Jo and S. -K. Kim: J. Kor. Foundrymen's Soc., "Melt Protection Property and Ignition Resistance Property of CaO added AZ91D Mg Alloy", 27-3 (2007) 131-134   과학기술학회마을
8 J. -K. Lee and S. -K. Kim: J. Kor. Foundrymen's Soc., "Development of Eco-Mg Alloy", 29-1 (2009) 101-112   과학기술학회마을
9 S. -H. Ha, J. -K. Lee, S. -b. Jung, Y. -J. Kim, H. -H. Jo and S. K. Kim: J. Kor. Foundrymen's Soc., "Oxidation behavior of CaO added Mg and Mg-Al alloys" 27-3(2007) 126-130   과학기술학회마을
10 B. -H. Choi, N. -S. You, W. -W. Park and I. -M. Park: J. Kor. Inst. Met. & Mater., "Oxidation Behaviors of Ca Containing AZ91 Magnesium Alloy", 42-8 (2004) 673-678