Accession Number : ADA131857

Title :   Enthalpy - Improved Dielectric Insulation for Superconducting Wires.

Descriptive Note : Final rept. Jun 80-Mar 82,

Corporate Author : LAKE SHORE CRYOTRONICS INC WESTERVILLE OH

Personal Author(s) : Lawless,W N ; Clark,C F ; Arenz,R W

PDF Url : ADA131857

Report Date : May 1982

Pagination or Media Count : 150

Abstract : The purpose of this study was to investigate for the first time dielectric materials for enthalpy stabilization, the broad picture being that these materials would also serve as the dielectric-insulation coating. These new, inorganic materials resulted from basic research by the author into the specific heats of ferroelectric-type materials at low and glass which leads to enhanced specific-heat properties in several cases. In a particularly noteworthy case (60% SC-1C ceramic + 40% 7570 glass), the composite has a much larger specific heat (approx. = 0.07 J/cu cm/K) than the bulk ceramic alone below 7 K. There is evidence that the low thermal conductivities of all the composites are due to Kapitza resistance, and suggestions are made for improving these conductivities.

Descriptors :   *Superconductors, *Electrical insulation, *Dielectric properties, *Enthalpy, Composite materials, Ceramic materials, Inorganic materials, Thermal conductivity, Specific heat, Thermal analysis, Measurement, Electric wire, Coatings

Subject Categories : Ceramics, Refractories and Glass
      Coatings, Colorants and Finishes
      Electricity and Magnetism
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE