Thermal Desorption Spectra, Equilibrium Desorption Rates and Equilibrium Surface Coverages of Mechanically Polished and of Sand and Bead Blasted Inconel 600 Surfaces

摘要

Equilibrium surface coverage and equilibrium outgassing rate of materials facing the plasma in fusion technology are studied. Inconel 600 surfaces were examined in the temperature range from 20 to 550C. The first sample was mechanically polished and had a total hemispherical emissivity at low temperatures Epsilon = 0.146 and a surface roughness CLA1 = 0.08 microns while the second sample was sand and bead blasted with Epsilon = 0.382 and CLA2 = 1.2 microns.