Preparation of low-silicon vanadium metal
A modified method for preparing high purity vanadium metal by the aluminothermic reduction of V/sub 2/O/sub 5/ oxide in a water-cooled copper crucible is described. Experiments designed to prepare low-silicon vanadium directly from commercial grade V/sub 2/O/sub 5/ show promise of simplifying the process for producing this material on a commercial scale. A vanadium-oxygen alloy is first prepared and then double electron-beam melted into platelet form during which 810 is removed by volatilization. Residual oxygen is removed from the platelets by a calcium deoxidation procedure. Experiments in which V/sub 2/O/sub 5/ is added to commercial vanadium metal to lower its silicon content by similar processing are also described. Silicon in amounts up to 1000 wt ppM was found to have a rather small effect on the hardness, yield and tensile strength and ductility of vanadium.
- Research Organization:
- Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6538176
- Report Number(s):
- IS-M-513; ON: DE84014818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
ELEMENTS
METALS
OXIDES
OXYGEN COMPOUNDS
REDUCTION
SEMIMETALS
SILICON
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
VANADIUM OXIDES