Metallothermic reduction of yttrium halides
This investigation studied new methods to prepare high-purity yttrium metal. Various methods were used to prepare pure intermediate compounds, primarily chlorides, bromides, and iodides, which were subsequently reduced to metal. Lithium and sodium proved to be the best reductants from the standpoint of yield (greater than 95 percent) and purity (greater than 99.8 percent) of the yttrium. The purest yttrium obtained was prepared by sodium reduction of yttrium chloride and contained only 125 ppM oxygen; other impurities did not exceed 1,000 ppM. In larger scale tests yttrium containing only 800 to 1,000 ppM total impurities was obtained by lithium reduction of yttrium chloride. The tensile properties of high-purity yttrium were determined. Mechanical tests showed that yttrium can be forged, extruded, rolled, spot welded, and deep drawn. (DLC)
- Research Organization:
- Bureau of Mines, Albany, OR (USA). Albany Metallurgy Research Center
- DOE Contract Number:
- EY-76-C-02-0599
- OSTI ID:
- 7313925
- Report Number(s):
- BM-RI-6259
- Country of Publication:
- United States
- Language:
- English
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PREPARATION AND PROPERTIES OF HIGH PURITY YTTRIUM METAL
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Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
BROMIDES
BROMINE COMPOUNDS
CHEMICAL PREPARATION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
IMPURITIES
IODIDES
IODINE COMPOUNDS
MECHANICAL PROPERTIES
METALS
REDUCTION
SHEETS
SYNTHESIS
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YIELDS
YTTRIUM
YTTRIUM BROMIDES
YTTRIUM CHLORIDES
YTTRIUM COMPOUNDS
YTTRIUM IODIDES