Development and laboratory testing of low Z refractory coatings for fusion reactor limiters
Conference
·
OSTI ID:5405001
A materials development program for low Z (Z < 24) coated tokamak limiters is described. A variety of refractory coatings applied by chemical vapor deposition, plasma spraying and chemical conversion to graphite and copper substrates have been evaluated. The results of laboratory testing for low energy hydrogen ion erosion, arc erosion and thermal fatigue by pulsed electron beam heating are reported. The 250 V hydrogen ion erosion data, analysed in terms of the effect of plasma radiation losses from resultant contaminants, indicates near equivalence of the very low Z (B and B/sub 4/C e.g.) and the moderate Z (e.g., TiB/sub 2/) coatings. Thermal fatigue testing has identified several candidate materials which can survice 1000, 3 kJ /cm/sup 2/ pulses of electron beam heating. The development of prototype limiters of TiB/sub 2/, TiC and B coated graphite for testing in the ORNL ISX-B tokamak is described.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 5405001
- Report Number(s):
- SAND-79-2409C; CONF-800455-6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
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
CHARGED PARTICLES
CLOSED PLASMA DEVICES
COATINGS
DATA
DATA FORMS
ELECTRON BEAMS
ELEMENTS
EXPERIMENTAL DATA
FATIGUE
GRAPHITE
HIGH TEMPERATURE
HYDROGEN IONS
INFORMATION
IONS
ISOLATED VALUES
LEPTON BEAMS
LIMITERS
MECHANICAL PROPERTIES
NONMETALS
NUMERICAL DATA
PARTICLE BEAMS
PERFORMANCE TESTING
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REFRACTORIES
TESTING
THERMONUCLEAR DEVICES
TITANIUM BORIDES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TOKAMAK DEVICES
TRANSITION ELEMENT COMPOUNDS
360103 -- Metals & Alloys-- Mechanical Properties
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
CHARGED PARTICLES
CLOSED PLASMA DEVICES
COATINGS
DATA
DATA FORMS
ELECTRON BEAMS
ELEMENTS
EXPERIMENTAL DATA
FATIGUE
GRAPHITE
HIGH TEMPERATURE
HYDROGEN IONS
INFORMATION
IONS
ISOLATED VALUES
LEPTON BEAMS
LIMITERS
MECHANICAL PROPERTIES
NONMETALS
NUMERICAL DATA
PARTICLE BEAMS
PERFORMANCE TESTING
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REFRACTORIES
TESTING
THERMONUCLEAR DEVICES
TITANIUM BORIDES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TOKAMAK DEVICES
TRANSITION ELEMENT COMPOUNDS