Synthesis of Y2O3-Dispersed W Powders Prepared by Ultrasonic Spray Pyrolysis and Polymer Solution Route

The nano-sized Y2O3 dispersed W composite powder is prepared by ultrasonic spray pyrolysis of a tungsten precursor using ammonium metatungstate hydrate and a polymer addition solution method using Y-nitrate. XRD analysis for calcined powder showed the formation of WO2 phase by partial oxidation of W...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2021-01, Vol.66 (3), p.799-802
Main Authors: Jo, Hyeonhui, Lee, Young-In, Suk, Myung-Jin, Jeong, Young-Keun, Oh, Sung-Tag
Format: Article
Language:English
Subjects:
Addition polymerization
Hydrogen reduction
Nanoparticles
Oxidation
Polymers
Roasting
Spray pyrolysis
tungsten
ultrasonic spray pyrolysis
wet chemical route
y2o3 dispersion
Yttrium oxide
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Summary:The nano-sized Y2O3 dispersed W composite powder is prepared by ultrasonic spray pyrolysis of a tungsten precursor using ammonium metatungstate hydrate and a polymer addition solution method using Y-nitrate. XRD analysis for calcined powder showed the formation of WO2 phase by partial oxidation of W powder during calcination in air. The TEM and phase analysis for further hydrogen reduction of calcined powder mixture exhibited that the W powder with a uniform distribution of Y2O3 nanoparticles can be successfully produced. These results indicate that the wet chemical method combined with spray pyrolysis and polymer solution is a promising way to synthesis the W-based composites with homogeneous dispersion of fine oxide particles.
ISSN:1733-3490
2300-1909
DOI:10.24425/amm.2021.136383