Aluminium (metal) microspheres, SEM

Numéro d’image : 12302013
Aluminium (metal) microspheres, SEM
Coloured scanning electron micrograph (SEM) of Aluminium (metal) microspheres. These tiny spheres are made from aluminium oxide. Aluminium is the most abundant metal in the on Earth. It makes up about 8% by weight of the Earth's solid surface. Aluminium is too reactive chemically to occur in nature as a free metal. Instead it is found combined in over 270 different minerals. The main source of aluminium is bauxite ore. Approximately 95% of the world's bauxite production is processed first into alumina (aluminium oxide, Al2O3), and then into aluminium by electrolysis. Aluminium resists corrosion due to passivation and low density. Its reactive nature makes it useful as a catalyst or additive in chemical mixtures, including toothpaste and ammonium nitrate explosives. Aluminium is also widely used in the fabrication of superconducting devices, particularly single electron transistors and superconducting quantum devices. Magnification: x2, 400 when
Licence : Droits gérés
Crédit: Science Photo Library / DENNIS KUNKEL MICROSCOPY
Taille de l’image : 3483 px × 2613 px
Model Release : Non requis
Property Release : Non requis
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