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Please use this identifier to cite or link to this item: https://dspace.ffh.bg.ac.rs/handle/123456789/1043
Title: Gel-combustion synthesis of NiO-MoO<inf>3</inf> mixtures and their reduction to Ni-Mo alloys
Authors: Mentus, Slavko 
Tomić-Tucaković, Biljana
Majstorović, Divna
Dimitrijević, Radovan
Keywords: Nickel alloys;Oxides;Scanning electron microscopy;Sol-gel;Thermogravimetric analysis;X-ray diffraction
Issue Date: 15-Nov-2008
Journal: Materials Chemistry and Physics
Abstract: 
The oxide mixtures xNiO-(1 - x)MoO3 (0.2 < x < 1 ) were synthesized by gel-combustion procedure, using mixed aqueous solutions of ammonium molybdate, nickel nitrate and citric acid as the precursor solution. The oxide products were characterized by scanning electron microscopy and X-ray diffractometry. The X-ray diffractograms indicated the presence of NiMoO 4 and either NiO or MoO3 in the oxide products. By heating in hydrogen atmosphere, the oxide mixtures were transformed into Ni-Mo alloys. Thermogravimetric study of the reduction procedure evidenced that temperature indispensable to complete reduction increased progressively from 400 to 900 °C if x decreased from 1 toward 0. The structure of Ni-Mo alloys was examined by X-ray diffractometry, and the following alloys were evidenced: Ni(Mo) solid solutions, Ni4Mo, and NiMo. © 2008 Elsevier B.V. All rights reserved.
URI: https://dspace.ffh.bg.ac.rs/handle/123456789/1043
ISSN: 0254-0584
DOI: 10.1016/j.matchemphys.2008.05.043
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University of Belgrade
Faculty of Physical Chemistry
Studentski trg 12-16
11158 Belgrade 118
PAC 105305
SERBIA
University of Belgrade Faculty of Physical Chemistry