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Purification of yttrium metal by zone refining and field freezing.

Authors
Murphy-JE; Wong-MM
Source
J Less-Common Met 1975 Mar; 40(1):65-77
NIOSHTIC No.
10009558
Abstract
A study has been made of the purification of yttrium metal by zone refining and field freezing. A floating molten zone was used to avoid contamination of the yttrium metal by the container material. The experiments were conducted under high vacuum to take advantage of the vaporization of volatile impurities. Travel rates of 5, 1, and 0.5 Cm/hr were used. Several metallic impurities such as iron and nickel were removed by zone refining. Differences in results between zone refining and field freezing were small, and possible explanations are discussed. Large single crystals of yttrium were produced by the techniques described.
Keywords
Metals; Metallurgical-processes; Metallurgy
CODEN
JCOMAH
Publication Date
19750301
Document Type
OP; Journal Article
Fiscal Year
1975
NTIS Accession No.
NTIS Price
Identifying No.
OP 26-75
Issue of Publication
1
ISSN
0022-5088
NIOSH Division
RERC
Source Name
Journal of the Less-Common Metals
State
NV
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