Characterizing Thermal Barrier Coatings (TBCs) Thermal Resistance & Performance
Details: Thermal barrier coatings (TBCs) are used widely in the aviation, aerospace, and automotive sectors to manage the hazards posed by exhaust heat. These materials are used to provide thermal insulation to and prolong the service of hot section metal engine components – particularly in aviation, where fuel burns at temperatures of up to 2000 °C and the metal engine components begin to melt around 1200 °C, these components are necessary to the safe operation of the engine as one part of a complex heat management system that incorporates a variety of strategies, including film cooling.
Recent work has shown that, within a reasonable temperature range, the operational temperature of a jet engine is proportional to the engine efficiency – that is, for higher operational temperatures, a jet engine becomes more efficient. Unfortunately, existing materials either suffer from unsuitable mechanical properties resulting in poor thermal cycling performance or from unsuitable thermophysical or thermochemical properties, with phase changes or chemical attacks occurring at an operational temperature above 1200°C. Research is therefore underway to develop new TBC materials with improved temperature ranges to enable the development of more efficient jet engines.
Join us online for a free webinar profiling how researchers at the University College London have employed the C-Therm TCi Thermal Conductivity Analyzer in characterizing the performance of new composite materials. C-Therm TCi results demonstrated improved thermal resistivity (lower thermal conductivity) on lanthanum titanium aluminum oxide, a benchmark material for the development of high-temperature TBCs.
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