Electrolytic preparation of titanium and zirconium diborides from their oxides and mineral concentrates
Technical Report
·
OSTI ID:7262361
TiB/sub 2/, ZrB/sub 2/, and HfB/sub 2/ were electrodeposited from their respective oxides dissolved in borate-chloride-cryolite electrolytes. Titanium diboride was also electrodeposited from rutile (TiO/sub 2/) dissolved in a Na/sub 2/B/sub 4/O/sub 7/-Na/sub 2/CO/sub 3/-Na/sub 3/AlF/sub 6/-NaCl electrolyte at 1,050/sup 0/C; 14 kWh were required to produce 1 lb of TiB/sub 2/. Major impurities in the TiB/sub 2/ produced in a 10-deposition cycle experiment, in weight-percent, were Al, 0.2; Cr, 0.3; Fe, 0.1; V, 0.3; C, 1.4; and O, 1.0. Zirconium diboride was electrodeposited from zircon (ZrSiO/sub 4/) dissolved in a Na/sub 2/B/sub 4/O/sub 7/-NaOH-Na/sub 3/AlF/sub 6/-NaCl-NaF electrolyte at 1,050/sup 0/C. The ZrB/sub 2/ produced in a 10-deposition cycle experiment contained the following impurities in weight-percent: Fe, 0.1; Si, 0.5; C, 0.3; and O, 0.6. Energy required to produce 1 lb of ZrB/sub 2/ was 9.3 kWh.
- Research Organization:
- Bureau of Mines, Washington, D.C. (USA)
- OSTI ID:
- 7262361
- Report Number(s):
- BM-RI-8053
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
DEPOSITION
ELECTRODEPOSITION
ELECTROLYSIS
HAFNIUM BORIDES
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
LYSIS
MINERALS
ORE PROCESSING
OXIDES
OXYGEN COMPOUNDS
PROCESSING
SURFACE COATING
TITANIUM BORIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM BORIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
DEPOSITION
ELECTRODEPOSITION
ELECTROLYSIS
HAFNIUM BORIDES
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
LYSIS
MINERALS
ORE PROCESSING
OXIDES
OXYGEN COMPOUNDS
PROCESSING
SURFACE COATING
TITANIUM BORIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM BORIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES