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Self-growth of micro- and nano-structured Mg(OH) 2 on electrochemically anodised Mg–Li alloy surface.
- Source :
-
Journal of Experimental Nanoscience . Jan2015, Vol. 10 Issue 1, p56-65. 10p. - Publication Year :
- 2015
-
Abstract
- Formation of Mg(OH)2nanowires and their assemblies with sphere-shaped, echinus-shaped and nest-like micro-structures on a Mg-Li alloy surface was successfully demonstrated. Mg(OH)2nanowires were formed on the alloy surface via a self-growth process, after the alloy was electrooxidised in NaCl solution and the oxidation products were removed. The nanowires were characterised by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Infrared spectroscopy. The nanowires have hexagonal rod-like or brush-like morphology and are poorly crystallised. Pre-anodisation and the presence of Li in the alloy are key factors for the nanowire growth, which likely proceeds via a dissolution–precipitation mechanism. The roles of Li can be attributed to the prohibition of the formation of passivation film on the alloy surface and the acceleration of the formation of OH−anions through hydrogen-evolution reaction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17458080
- Volume :
- 10
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Experimental Nanoscience
- Publication Type :
- Academic Journal
- Accession number :
- 98775054
- Full Text :
- https://doi.org/10.1080/17458080.2013.792958