DEVELOPMENT OF HIGH TEMPERATURE ALKALI METAL RESISTANT INSULATED WIRE
Abstract
The program effort is directed toward the development of an insulated electrical conductor resistant to saturated potassium (850 C) and mercury (538 C) vapors. Conductivity measurements were conducted at high temperature (538 C) and (850 C) on clad conductors. Several attempts to fabricate electrical test capsules for mercury and potassium exposure were partially successful. Nickel clad silver coils of a No. 8 wire size were successfully coated with several different ceramic coatings by plasma spraying. The coated wire coil could be compressed without destroying the ceramic insulation. A series of active metal brazing alloys were tested for their corrosion resistance to potassium vapors at 850 C. Several alloys were found to be resistant to this environment. Aluminum nitride coatings, formed by decomposition of an aluminum chloride-ammonia complex, were investigated as a possible ceramic insulation resistant to potassium vapor at 850 C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1963
- Accession Number
- AD0423693
Entities
People
- E. S. Bober
- R. E. Stapelton
- W. H. Snavely
Organizations
- Westinghouse Electric Corporation