Investigation on high-temperature thermal conductivity in YTaO4 ceramics via 3-Omega method

Thermal barrier coatings are essential for enhancing the performance and efficiency of high-performance systems, such as aerospace engines and gas turbines, by providing thermal protection at high temperatures. This study investigates YTaO4 ceramic, a material with notable high-temperature stability, low thermal conductivity, and strong corrosion resistance, making it a promising alternative for thermal barrier coatings. However, precise measurement of YTaO4’s thermal conductivity under high-temperature conditions poses a significant challenge. To address this, we employed the 3-Omega method, a transient technique well-suited for accurately measuring thermal conductivity across a wide temperature range from 300 to 700 K. The results indicate a decreasing trend in thermal conductivity with increasing temperature, exhibiting YTaO4’s potential as a high-temperature thermal barrier coating material with superior thermal insulation properties. This study not only demonstrates the utility of the 3-Omega method for characterizing thermal properties at high temperatures but also highlights its value for advancing research in high-performance materials tailored for thermal management in advanced engineering applications.