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Kang H, Choi HJ, Kang SW, et al. Multi-functional magnesium alloys containing interstitial oxygen atoms. Sci Rep. 2016;6:23184doi: 10.1038/srep23184.
Kang, H., Choi, H. J., Kang, S. W., Shin, S. E., Choi, G. S., & Bae, D. H. (2016). Multi-functional magnesium alloys containing interstitial oxygen atoms. Scientific reports, 623184. https://doi.org/10.1038/srep23184
Kang, H, et al. "Multi-functional magnesium alloys containing interstitial oxygen atoms." Scientific reports vol. 6 (2016): 23184. doi: https://doi.org/10.1038/srep23184
Kang H, Choi HJ, Kang SW, Shin SE, Choi GS, Bae DH. Multi-functional magnesium alloys containing interstitial oxygen atoms. Sci Rep. 2016 Mar 15;6:23184. doi: 10.1038/srep23184. PMID: 26976372; PMCID: PMC4791639.
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Sci Rep. 2016 Mar 15;6:23184. doi: 10.1038/srep23184.

Multi-functional magnesium alloys containing interstitial oxygen atoms.

Scientific reports

H Kang, H J Choi, S W Kang, S E Shin, G S Choi, D H Bae

Affiliations

  1. Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong Seodaemun-gu, Seoul, 120-749, Korea.
  2. Department of Advanced Material Engineering, Kookmin University,77 Jeongneung-ro Seongbuk-gu, Seoul, 136-702, Korea.
  3. Gangwon Research Institute Technology Research Center, 290 Daejeon-dong, Gangneung, 210-340 Korea.

PMID: 26976372 PMCID: PMC4791639 DOI: 10.1038/srep23184

Abstract

A new class of magnesium alloys has been developed by dissolving large amounts of oxygen atoms into a magnesium lattice (Mg-O alloys). The oxygen atoms are supplied by decomposing titanium dioxide nanoparticles in a magnesium melt at 720 °C; the titanium is then completely separated out from the magnesium melt after solidification. The dissolved oxygen atoms are located at the octahedral sites of magnesium, which expand the magnesium lattice. These alloys possess ionic and metallic bonding characteristics, providing outstanding mechanical and functional properties. A Mg-O-Al casting alloy made in this fashion shows superior mechanical performance, chemical resistance to corrosion, and thermal conductivity. Furthermore, a similar Mg-O-Zn wrought alloy shows high elongation to failure (>50%) at room temperature, because the alloy plastically deforms with only multiple slips in the sub-micrometer grains (<300 nm) surrounding the larger grains (~15 μm). The metal/non-metal interstitial alloys are expected to open a new paradigm in commercial alloy design.

References

  1. Science. 2010 May 21;328(5981):986-7 - PubMed

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