Testing of low Z coated limiters in tokamak fusion devices

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:5346895

Whitely, J B; Mullendore, A W; Langley, R A

Extensive testing on a laboratory scale has been used to select those coatings most suitable for this environment. From this testing which included pulsed electron beam heating, low energy ion bombardment and arcing, chemical vapor deposited coating of TiB/sub 2/ and TiC on Poco graphite substrates have been selected and tested as limiters in ISX. Both limiter materials gave clean, stable, reproducible tokamak discharges the first day of operation. After one weeks exposure, the TiC limiter showed only superficial damage with no coating failure. The TiB/sub 2/ limiter had some small areas of coating failure. TiC coated graphite limiters have also been briefly tested in the tokamaks Alcator and PDX with favorable results.

• Research Organization: Sandia Labs., Albuquerque, NM (USA); Oak Ridge National Lab., TN (USA)
• DOE Contract Number: EY-76-C-04-0789
• OSTI ID: 5346895
• Report Number(s): SAND-79-2105C; CONF-800439-3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106 -- Metals & Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
BEAMS
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON
CARBON COMPOUNDS
CLOSED PLASMA DEVICES
COATINGS
CURRENTS
DATA
DATA FORMS
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRON BEAMS
ELEMENTS
EROSION
EXPERIMENTAL DATA
GRAPHITE
INFORMATION
ISOLATED VALUES
LEPTON BEAMS
LIMITERS
NONMETALS
NUMERICAL DATA
PARTICLE BEAMS
PERFORMANCE TESTING
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
TESTING
THERMONUCLEAR DEVICES
TITANIUM BORIDES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TOKAMAK DEVICES
TRANSITION ELEMENT COMPOUNDS