Radiation-hard electrical coil and method for its fabrication

Patent · Tue Jun 29 00:00:00 EDT 1982

OSTI ID:6175240

Grieggs, R J; Blake, R D; Gac, F D

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.

• DOE Contract Number: W-7405-ENG-36
• Assignee: ERA-08-030303; EDB-83-087583
• Application Number: ON: DE83010518
• OSTI ID: 6175240
• Country of Publication: United States
• Language: English

Related Subjects

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