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Structure and properties of nanocrystalline nickel prepared by selective leaching at different temperatures
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SYSNO ASEP 0477152 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Structure and properties of nanocrystalline nickel prepared by selective leaching at different temperatures Author(s) Michalcová, A. (CZ)
Marek, I. (CZ)
Len, A. (HU)
Heczko, Oleg (FZU-D) RID, ORCID
Drahokoupil, Jan (FZU-D) RID, ORCID
Vojtěch, D. (CZ)
Huber, Š. (CZ)
Nováková, R. (CZ)Number of authors 8 Source Title Pure and Applied Chemistry. - : Walter de Gruyter - ISSN 0033-4545
Roč. 89, č. 4 (2017), s. 545-552Number of pages 8 s. Language eng - English Country US - United States Keywords magnetic properties ; magnetization ; nanocrystals ; neutron scattering ; nickel ; SANS ; SSC-2016 ; X-ray diffraction Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GBP108/12/G043 GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000403319800015 EID SCOPUS 85019378009 DOI 10.1515/pac-2016-1028 Annotation Nanocrystalline nickel is an interesting material for catalysis, and also, like all nanocrystalline metals, it has potential for structural application. Our aim was to develop a method for preparation of precursor materials for powder metallurgy. Because of this, selective leaching of binary alloy was chosen as it leads to production of nanocrystalline clustered (sub) micro particles. In this work, the preparation of Ni particles by selective leaching of Al matrix from Al-50 wt.% Ni in NaOH water solution is described. It was found that structure and magnetic properties were strongly dependent on leaching temperature, which was proven by characterization of Ni particles leached at 20, 0, 20, 40, 60 and 80 degrees C. The microstructure of as-prepared particles was observed by HRTEM and also by small angle neutron scattering. Magnetic properties were characterized by measuring of saturation magnetization. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
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