Apparatus description and data analysis of a radiometric technique for measurements of spectral and total normal emittance
Abstract
The development of a radiometric technique for determining the spectral and total normal emittance of materials heated to temperatures of 800, 1100, and 1300 K by direct comparison with National Bureau of Standards (NBS) reference specimens is discussed. Emittances are measured over the spectral range of 1 to 15 microns and are statistically compared with NBS reference specimens. Results are included for NBS reference specimens, Rene 41, alundum, zirconia, AISI type 321 stainless steel, nickel 201, and a space-shuttle reusable surface insulation.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1975
- Bibcode:
- 1975STIN...7515952E
- Keywords:
-
- Emittance;
- High Temperature Tests;
- Materials Tests;
- Radiometers;
- Surface Properties;
- Nickel Alloys;
- Space Shuttles;
- Stainless Steels;
- Thermal Insulation;
- Zirconium;
- Instrumentation and Photography