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Purification of Yttrium by Electrorefining.

Authors
Fleck-DC; Kleespies-EK; Kesterke-DG
Source
NTIS: PB 214 763 :12 pages
Link
NIOSHTIC No.
10008965
Abstract
Electrorefining yttrium from selected low-melting yttrium-base alloys is investigated, and various halide systems are studied as potential electrolytes for use in preparing low-oxygen yttrium by electrorefining unalloyed yttrium. Yttrium cathode products having significantly less metallic impurities than the anode materials were prepared from alloys containing nickel, iron, and manganese by electrorefining in licl-ycl3 electrolytes at 900 deg to 1,000 deg c. Yttrium-copper and yttrium-magnesium alloys are not suitable as anode feed materials. An evaluation of chloride, fluoride, bromide, and mixed chloride-fluoride electrolytes showed that cathode products containing much less oxygen than the anode material can be obtained in the fluoride and mixed chloride-fluoride systems. Initial cathode current density has no apparent effect on the purity of the products obtained in both phases of the investigation.
Publication Date
19730101
Document Type
IH; Report of Investigation;
Fiscal Year
1973
NTIS Accession No.
PB-214763
NTIS Price
A03
Identifying No.
RI 7710
NIOSH Division
RERC;
Source Name
NTIS: PB 214 763
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