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Title: Radiation-hard electrical coil and method for its fabrication

Abstract

A radiation-hard insulated electrical coil and method for making the same are disclosed. In accordance with the method, a conductor, preferably copper, is wrapped with an aluminum strip and then tightly wound into a coil. The aluminum-wrapped coil is then annealed to relax the conductor in the coiled configuration. The annealed coil is then immersed in an alkaline solution to dissolve the aluminum strip, leaving the bare conductor in a coiled configuration with all of the windings closely packed yet uniformly spaced from one another. The coil is then insulated with a refractory insulating material. In the preferred embodiment, the coil is insulated by coating it with a vitreous enamel and subsequently potting the enamelled coil in a castable ceramic concrete. The resulting coil is substantially insensitive to radiation and may be operated continuously in high radiation environments for long periods of time.

Inventors:
; ;
Issue Date:
OSTI Identifier:
6175240
Application Number:
ON: DE83010518
Assignee:
ERA-08-030303; EDB-83-087583
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 42 ENGINEERING; ELECTRIC COILS; FABRICATION; RADIATION HARDENING; ALUMINIUM; ANNEALING; CERAMICS; COPPER; ENAMELS; POTTING; COATINGS; ELECTRICAL EQUIPMENT; ELEMENTS; EQUIPMENT; HARDENING; HEAT TREATMENTS; METALS; PHYSICAL RADIATION EFFECTS; RADIATION EFFECTS; TRANSITION ELEMENTS; 440200* - Radiation Effects on Instrument Components, Instruments, or Electronic Systems; 420200 - Engineering- Facilities, Equipment, & Techniques

Citation Formats

Grieggs, R.J., Blake, R.D., and Gac, F.D. Radiation-hard electrical coil and method for its fabrication. United States: N. p., 1982. Web.
Grieggs, R.J., Blake, R.D., & Gac, F.D. Radiation-hard electrical coil and method for its fabrication. United States.
Grieggs, R.J., Blake, R.D., and Gac, F.D. Tue . "Radiation-hard electrical coil and method for its fabrication". United States.
@article{osti_6175240,
title = {Radiation-hard electrical coil and method for its fabrication},
author = {Grieggs, R.J. and Blake, R.D. and Gac, F.D.},
abstractNote = {A radiation-hard insulated electrical coil and method for making the same are disclosed. In accordance with the method, a conductor, preferably copper, is wrapped with an aluminum strip and then tightly wound into a coil. The aluminum-wrapped coil is then annealed to relax the conductor in the coiled configuration. The annealed coil is then immersed in an alkaline solution to dissolve the aluminum strip, leaving the bare conductor in a coiled configuration with all of the windings closely packed yet uniformly spaced from one another. The coil is then insulated with a refractory insulating material. In the preferred embodiment, the coil is insulated by coating it with a vitreous enamel and subsequently potting the enamelled coil in a castable ceramic concrete. The resulting coil is substantially insensitive to radiation and may be operated continuously in high radiation environments for long periods of time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {6}
}