Metalpedia
Metalpedia
  • Magnesium industry news
  • 1. Simple substitution cuts solar cell toxicity
  • 27 June 2014 Patrick Walter
  • A cheap chemical used to make bath salts and tofu looks to be the solution to cutting toxic cadmium from a promising type of solar cell. Magnesium chloride can be used in place of poisonous cadmium chloride in thin film solar cells without the need to change the fabrication process. As well as reducing this kind of solar cell’s environmental impact, this substitution will make the cells much cheaper without compromising on performance.
  • 2. Development of the world's strongest magnesium alloy
  • Jun 25, 2014
  • There is strong demand for the improvement of the mechanical properties (particularly the strength) of magnesium (Mg) alloys to meet the growing industrial applications of structural materials.
  • Hiromi Miura and colleagues at the Toyohashi University of Technology applied severe plastic deformation, that is, multi-directional forging (MDF), to commercial brittle Mg alloys by controlling pass strains and severe plastic deformation was realized without any cracking up to cumulative strain of 2.0.
  • The coarse initial grains were gradually subdivided into ultrafine grains by mechanical twinning. The initial coarse twins were further subdivided by higher order mechanical twins. The average grain size achieved at a cumulative strain of 2.0 was as fine as 0.3 μm.
  • The Mg alloy produced by MDF showed an excellent balance of mechanical properties of 530 MPa yield stress, 650 MPa ultimate tensile strength, and 9% plastic strain to fracture (Fig. 1). This was the world strongest Mg alloy ever produced.
  • The ultrafine grain structure and suppression of texture resulted in the extraordinarily high strength without spoiling ductility.
  • The researchers are now conducting experiment to produce large sizes samples of the MDFed Mg alloys.
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