Summary

This paper investigates the thermal absorptivity of a metallic surface contaminated by EAC-1A regolith simulant. The study measures total hemispherical absorptivity (TH) at varying temperatures between 5 K and 100 K, with thermal radiation sources ranging from 20 to 280 K. Results show that EAC-1A contamination significantly increases TH, with effects becoming more pronounced at higher simulant volumes. The findings suggest that EAC-1A grains act as thermal shields, reducing heat transfer to the substrate. This paper investigates the thermal absorptivity of a metallic surface contaminated by EAC-1A regolith simulant. The study measures absorptivity at varying temperatures and simulant amounts, revealing increased absorptivity with higher simulant mass and temperature-dependent maxima. The simulant's thermal shielding effect and multilayer stratification are discussed as factors influencing absorptivity. This paper investigates the thermal absorptivity of a metallic surface contaminated by EAC-1A regolith simulant. It reports absorptivity increases up to 30 times and maximal TH of 94%. The study uses scanning electron microscopy, cryogenic apparatus, and thermal radiation measuremen

Methods and applications