Titanium diboride ceramic fiber composites for Hall-Heroult cells
Patent
·
OSTI ID:867407
- Knoxville, TN
An improved cathode structure for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 deg. C can be used.
- Research Organization:
- LOCKHEED MARTIN ENRGY SYST INC
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Number(s):
- US 4929328
- OSTI ID:
- 867407
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/204/427/428/501/
1000
aluminum
aluminum metal
attack
base
base mat
base material
below
carbide
carbide fibers
carbon
carbon fiber
carbon fibers
cathode
cathode structure
cells
ceramic
ceramic fiber
chemical
chemical vapor
composites
conductive
deg
degrade
diboride
diboride ceramic
electrically
electrically conductive
electrolytic
electrolytic production
exhibits
fiber
fiber base
fiber composite
fiber composites
fibers
fracture
fracture toughness
hall-heroult
hall-heroult cells
improved
infiltrated
infiltration
mat
material
metal
molten
molten aluminum
preform
production
purity
purity silicon
resistant
silicon
silicon carbide
structure
structure exhibits
sufficiently
techniques
temperatures
temperatures below
titanium
titanium diboride
toughness
typically
vapor
vapor infiltration
1000
aluminum
aluminum metal
attack
base
base mat
base material
below
carbide
carbide fibers
carbon
carbon fiber
carbon fibers
cathode
cathode structure
cells
ceramic
ceramic fiber
chemical
chemical vapor
composites
conductive
deg
degrade
diboride
diboride ceramic
electrically
electrically conductive
electrolytic
electrolytic production
exhibits
fiber
fiber base
fiber composite
fiber composites
fibers
fracture
fracture toughness
hall-heroult
hall-heroult cells
improved
infiltrated
infiltration
mat
material
metal
molten
molten aluminum
preform
production
purity
purity silicon
resistant
silicon
silicon carbide
structure
structure exhibits
sufficiently
techniques
temperatures
temperatures below
titanium
titanium diboride
toughness
typically
vapor
vapor infiltration