Titanium diboride ceramic fiber composites for Hall-Heroult cells

Patent · Tue May 29 00:00:00 EDT 1990

OSTI ID:7071162

Besmann, T M; Lowden, R A

An improved cathode structure is described 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 C can be used.

• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
• Patent Number(s): US 4929328; A
• Application Number: PPN: US 7-319770
• OSTI ID: 7071162
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360601* -- Other Materials-- Preparation & Manufacture
ALUMINIUM ORES
BORIDES
BORON COMPOUNDS
CATHODES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COMPOSITE MATERIALS
CORROSION RESISTANCE
DEPOSITION
ELECTRODES
ELECTROLYSIS
ELECTROLYTIC CELLS
FABRICATION
FRACTURE PROPERTIES
IMPREGNATION
LYSIS
MATERIALS
MECHANICAL PROPERTIES
ORES
SURFACE COATING
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS