A measurement system of high-temperature oxidation environment with ultrasonic Ir(0.6)Rth(0.4) alloy thermometry

作者：Wei, Yanlong; Wang, Gao^*; Gao, Yubin; Liu, Zhengguang; Xu, Lin; Tian, Miao; Yuan, Dongfang; Ren, Haiping; Zhou, Hanchang; Yang, Lu; Shi, Xueshun; Xiao, Zhaoqian

来源：Ultrasonics, 2018, 89: 102-109.

DOI：10.1016/j.ultras.2018.04.001

• Iridium-rhodium (60%Ir-40%Rh)
• Ultrasonic thermometry
• High-temperature oxidation
• Ultrasonic concentrator
• Delay time
• Ultrasonic wavelets

Iridium-rhodium is generally applied as a thermocouple material, with max operating temperature about 2150 degrees C. In this study, a ultrasonic temperature measurement system was designed by using Iridium-rhodium (60%Ir-40%Rh) alloy as an acoustic waveguide sensor material, and the system was preliminarily tested in a high-temperature oxidation environment. The result of ultrasonic temperature measurement shows that this system can indeed work stably in high-temperature oxidation environments. The relationship between temperature and delay time of ultrasonic thermometry up to 2200 degrees C was illustrated. Iridium-rhodium materials were also investigated in order to fully elucidate the proposed waveguide sensor's performance in a high-temperature oxidation environment. This system lays a foundation for further application of high-temperature measurement.

• 出版日期2018-9
• 单位中北大学