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Excessively High Vapor Pressure of Al-based Amorphous Alloys

School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education (KOREATECH), Cheonan 31253, Korea
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These authors contributed equally to this work.
Academic Editor: Hugo F. Lopez
Metals 2015, 5(4), 1878-1886; https://doi.org/10.3390/met5041878
Received: 1 September 2015 / Revised: 14 September 2015 / Accepted: 30 September 2015 / Published: 9 October 2015
Aluminum-based amorphous alloys exhibited an abnormally high vapor pressure at their approximate glass transition temperatures. The vapor pressure was confirmed by the formation of Al nanocrystallites from condensation, which was attributed to weight loss of the amorphous alloys. The amount of weight loss varied with the amorphous alloy compositions and was inversely proportional to their glass-forming ability. The vapor pressure of the amorphous alloys around 573 K was close to the vapor pressure of crystalline Al near its melting temperature, 873 K. Our results strongly suggest the possibility of fabricating nanocrystallites or thin films by evaporation at low temperatures. View Full-Text
Keywords: amorphous alloy; metallic glass; vapor pressure; glass forming ability amorphous alloy; metallic glass; vapor pressure; glass forming ability
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Jeong, J.I.; Lee, S.H.; Jeon, J.-B.; Kim, S.J. Excessively High Vapor Pressure of Al-based Amorphous Alloys. Metals 2015, 5, 1878-1886.

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