منابع مشابه
DIFFICULTIES IN GRAIN REFINING ALUMINUM LITHIUM ALLOYS USING COMMERCIAL Al-Ti AND Al-Ti-Bor MASTER ALLOYS
High strength aluminum alloys, especially those containing zirconium, are historically difficult to grain refine. Early efforts by Alcoa indicated that the addition of lithium to these alloys increases difficulty with grain refinement. Although grain refining of alloys 2090 and 2091 was possible, consistent results were not obtained. Statistically-designed experiments were used to quickly ident...
متن کاملRevised phase diagram for the Pt-Ti system from 30 to 60 at.% platinum
Physical Metallurgy Division, Mintek, Private Bag X3015, Randburg 2125, South Africa now at 44 Kildonan Cr, Waterdown, ON, L0R 2H5, CANADA School of Process and Materials Engineering, University of the Witwatersrand, Priv. Bag 3, WITS 2050, South Africa Electron Microscope Unit, University of the Witwatersrand, Private Bag 3, WITS 2050, South Africa Institute for Nanoscale Technology, Universit...
متن کاملapplication of nano-electrode platinum (pt) and nano-wire titanium (ti) for increasing electrical energy generation in microbial fuel cells of synthetic wastewater with carbon source (acetate)
the microbial fuel cells (mfcs) are a kind of systems through which the anaerobic bacteriaalong with the oxidation of simple or complicated organic matter in the wastewater can generate the electricpower. this is a modern approach used in generation of the clean and renewable energy. in this research, two pilot laboratories of double-chamber microbial fuel cells were made. one of them contained...
متن کاملThe Effect of Platinum Layer and Aluminizing Process on Surface Roughness of Coated Superalloy by Pt-Al
In this study, the effect of platinum-aluminide coating parameters on surface roughness of nickel-based superalloy Rene®80 was evaluated. For this purpose, different thicknesses of Pt-layer (2, 4, 6 and 8µm) were plated on the Samples. Then diffusion aluminide coating in two types, high tempeature-low activity and low temperature-high activity was performed. The results of structural investigat...
متن کاملDesign of Highly Uniform Platinum and Palladium Nanoparticle Decoration on TiO2 Nanotube Arrays: An Efficient Anode to the Electro-Oxidation of Alcohols
We explore electro-catalytic properties of a system consisting of platinum and palladium nanoparticles dispersed over a nanotubular self-organized TiO2 matrix. These electrodes prepared by electroess and microemulsion of palladium and palladium nanoparticles on to TiO2 nanotubes, respectively. Titanium oxide nanotubes were fabricated by anodizing titanium foil in ethylene glycol (EG) fluoride-c...
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ژورنال
عنوان ژورنال: Journal of Phase Equilibria and Diffusion
سال: 2009
ISSN: 1547-7037,1863-7345
DOI: 10.1007/s11669-009-9628-5