期刊
APPLIED PHYSICS LETTERS
卷 104, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4870832
关键词
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资金
- 973 Program [2011CB933300]
- National Natural Science Foundation of China [51071110, 51271134, 40972044, 51371130, J1210061]
- China MOE NCET Program [NCET-07-0640]
- MOE Doctoral Fund [20090141110059]
- Fundamental Research Funds for the Central Universities
- China Postdoctoral Science Foundation [2013M540602]
The atomic-scale oxide growth dynamics are directly revealed by in situ high resolution transmission electron microscopy during the oxidation of Mg surface. The oxidation process is characterized by the layer-by-layer growth of magnesium oxide (MgO) nanocrystal via the adatom process. Consistently, the nucleated MgO crystals exhibit faceted surface morphology as enclosed by {200} lattice planes. It is believed that the relatively lower surface energies of {200} lattice planes should play important roles, governing the growth mechanism. These results facilitate the understanding of the nanoscale oxide growth mechanism that will have an important impact on the development of magnesium or magnesium alloys with improved resistance to oxidation. (C) 2014 AIP Publishing LLC.
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