2007
DOI: 10.1002/chin.200740216
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Boyan Yuan,
Toru H. Okabe

Abstract: Production of Fine Tantalum Powder by Preform Reduction Process UsingMg-Ag Alloy Reductant. -Ta powder for electronic devices with a purity of more than 99 mass% and a narrow particle size distribution is prepared from a solid Ta2O5 preform by reaction with Mg vapor generated from a Mg-50 mol% Ag alloy heated at a constant temperature of 1273 K for 6 h. The samples are characterized by XRD and SEM. The particle size of the powder decreases with the vapor pressure of Mg and can be controlled by adjusting the M…

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