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Thick deposits and overlays for fusion-reactor applications

Author
Mattox, D. M.
Published
United States : [publisher not identified], 1983
Springfield, Va.: National Technical Information Service, [approximately 1983]
Physical Description
microfiche : negative ; 11 x 15 cm

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Summary
Coatings and/or claddings on the interior surfaces of magnetically confined fusion devices may be necessary to control the plasma-materials interactions which affect the reactor operation. Such interactions are: (1) machine conditioning, (2) impurity injection into the plasma, (3) fuel recycling from the plasma to the surfaces, and (4) material degradation. For present and near-term engineering/experimental reactors relatively thin coatings of refractory coatings of low-Z materials on selected components have been developed to reduce the erosion by chemical and physical sputtering and by arcing. These coatings have proven to be beneficial to the operation of experimental plasma devices and to be able to survive in the extreme environment of a high-power-plasma device. For future power reactors where erosion conditions will be more severe, thick coatings of low-Z materials are being developed. Of particular interest to depositing thick coatings over large areas and complex shapes is the low-pressure-plasma-spray (LPPS) process which forms coatings and structures by deposition of high velocity molten particles. Deposition of particulates allows gradation of composition and microstructure by controlling the composition of the powder feed and the deposition parameters.
Report Numbers
DE83014626; SAND-83-0812C; CONF-8309103-3
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC04-76DP00789
OSTI Identifier 6039700
Research organization: Sandia National Labs., Albuquerque, NM (USA).
View MARC record | catkey: 47332432