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Nitride Intermediates in the Preparation of Columbium, Vanadium, and Tantalum Metals. (In Two Parts). 2. Thermal Decomposition of the Nitrides.

Authors
Guidotti-RA; Atkinson-GB; Kesterke-DG
Source
NTIS: PB 250 694 :15 pages
Link
NIOSHTIC No.
10007635
Abstract
The federal Bureau of Mines studied the thermal decomposition of the nitrides of the group V a metals (cbn, ta3n5, and vn) with the goal of preparing high-purity metals. Solid-state purification and arc and electron-beam melting were examined. Electron-beam melting proved to be the most efficient means of nitrogen and oxygen removal. Columbium and tantalum of 99.9-Pct purity were prepared by this technique; in the case of vanadium, however, nitrogen could not be reduced below the solid-solution level.
Publication Date
19760101
Document Type
IH; Report of Investigation;
Fiscal Year
1976
NTIS Accession No.
PB-250694
NTIS Price
A03
Identifying No.
RI 8103
NIOSH Division
RERC;
Source Name
NTIS: PB 250 694
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