The effect of low-temperature auto-ignition of W-Cu2O nanopowders with core-shell structure

In this work, the effect of in-vacuum low-temperature auto-ignition of a W-Cu2O nanopowders mixture obtained by natural oxidation of W-Cu composite nanopowders is demonstrated. The powder is obtained via electrical explosion of wire technique and consists of bimetallic particles instead of Cu and W...

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Bibliographic Details
Published in:Vacuum Vol. 197. P. 110837 (1-6)
Main Author: Krinitcyn, Maksim G.
Other Authors: Svarovskaya, Natalya V., Lerner, Marat I.
Format: Article
Language:English
Subjects:
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000996324
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520 3 |a In this work, the effect of in-vacuum low-temperature auto-ignition of a W-Cu2O nanopowders mixture obtained by natural oxidation of W-Cu composite nanopowders is demonstrated. The powder is obtained via electrical explosion of wire technique and consists of bimetallic particles instead of Cu and W mixture. The evolution of the phase composition has been studied using in situ X-ray diffraction technology during heating. The structural investigation shows that particles have a core-shell structure, increasing a contact surface between reactants. The ongoing reactions are described, and studies of the structure of powders and combustion products are given. Combustion occurs in the solid-phase temperature range, which is confirmed by the thermal imaging data. 
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