| 1. |
- Sidnov, K. P., et al.
(författare)
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Effect of alloying on elastic properties of ternary Ni-Al-Ti system: Experimental validation
- 2016
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Ingår i: Journal of Alloys and Compounds. - : ELSEVIER SCIENCE SA. - 0925-8388 .- 1873-4669. ; 688, s. 534-541
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Tidskriftsartikel (refereegranskat)abstract
- Using combustion synthesis approach we fabricated B2 NiAl intermetallic compound as well as quasibinary Ni(Al50Ti50) alloy, where half Al atoms are randomly substituted by transitional metal Ti. Youngs modulus for synthesized materials was measured and appeared to be 222 +/- 10 GPa for NiAl and 175 +/- 15 GPa for Ni(Al50Ti50) phases. Using first-principles simulations in the framework of the Density Functional Theory, we investigate the elastic properties of Ni(Al1-xTix) system, including single-crystal, as well as polycrystalline elastic moduli. Direct comparison of the experimental and theoretical values of the Youngs modulus demonstrates that the employed theoretical approach allows carefully predict elastic properties of NiAl-based intermetallics. In particular, we predict that alloying NiAl with Ti should increase the ductility of the intermetallic phase. (C) 2016 Elsevier B.V. All rights reserved.
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| 2. |
- Podbolotov, K. B., et al.
(författare)
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Solution Combustion Synthesis of Copper Nanopowders : The Fuel Effect
- 2017
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Ingår i: Combustion Science and Technology. - : Taylor and Francis Inc.. - 0010-2202 .- 1563-521X. ; 189:11, s. 1878-1890
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Tidskriftsartikel (refereegranskat)abstract
- Pure copper nanoparticles have previously been successfully produced by different combustion methods, but most of them require the use of an inert atmosphere (N2, Ar) during the synthesis process or the usage of addition post reducing of metal oxides. In this article, novel modification of solution combustion synthesis technique for one-step metallic Cu nanoparticles preparation was developed. The main unique feature of our approach is the use of microwave-assisted foam preparation. Also, the effect of different types of fuels (urea, citric acid, glycine, and hexamethylenetetramine) on the combustion process and characteristics of resultant solid products was investigated. It was shown that the combination of microwave-assisted foam preparation and use of hexamethylenetetramine as a fuel allows producing pure metallic Cu nanoparticles (~67 nm) by one-step solution combustion synthesis under normal air atmosphere without any post reduction.
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