Thermal Conductivity and Total Emissivity Measurements in the Temperature Range 1000-3000 deg C

Abstract

The ratio of thermal conductivities and of thermal conductivities to total emissivities were measured for anisotropic ZT-type graphite in the temperature range 1000-2000 deg C. The emissivity of a sample changes even if it is stored at room temperature for a long time. To obtain the total emissivity of a material, the ratio of specific heat to total emissivity is determined for tantalum, tungsten, molybdenum, and niobium in the temperature range 1000-2000 deg C. In all cases, it is found that specific heat/total emissivity is a constant, independent of temperature. This permits an easy and accurate determination of the total emissivity of any material.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1964
Accession Number
AD0601315

Entities

People

  • Michael Hoch

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Conductivity
  • Equations
  • Graphitic Materials
  • High Temperature
  • Materials
  • Materials Laboratories
  • Measurement
  • Molybdenum
  • New York
  • Refractory Metals
  • Specific Heat
  • Tantalum
  • Thermal Conductivity
  • Tungsten
  • United States

Readers

  • Materials Science and Engineering.
  • Thermal Physics or Thermal Science.