Thermal Characterization of Emisshield

摘要

Testing was conducted on a high-emissivity nanoparticle ceramic coating (EmisshieldTM) for potential use as anhigh-temperature thermal protection coating on the Rocketplane XP vehicle. Although this product was essentiallyndeveloped for reentry vehicles, it has broad applicability in other high-speed elevated-temperature applications.Thisnwork presents a study of key thermal properties from room temperature up to conditions seen in a mild reentry.nSurface-normal emissivity, thermal conductivity, and heat capacity were evaluated as a function of temperature ton760u0001nC (1400u0001nF). Tests were also performed to determine the thermal-cycling durability and potential for reuse of thenceramic coating applied on metal substrates at elevated temperatures.