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Meeting MS&T22: Materials Science & Technology
Symposium Advanced Materials for Harsh Environments
Presentation Title High Temperature Thick Film Sensor Development Based on Doped Lanthanum Chromites Refractory Semiconductors Materials
Author(s) Javier A. Mena, Edward M Sabolsky, Konstantinos Sierros, Katarzyna Sabolsky, Domenic Cipollone, Víctor Mendoza, Anthony A. Abrahamian
On-Site Speaker (Planned) Javier A. Mena
Abstract Scope Solid-state high-temperature sensing devices are required for accurate temperature monitoring for a range of advanced manufacturing, transportation, and military applications. High-temperature conditions limit sensing strategies, where typically metal and semiconductor materials are unstable. In addition, strategies to embed the sensors directly within active components and protective refractory are of interest that permit sensing which is not possible with traditional electronic materials. Rare earth chromites semiconductors exhibit some properties of interest for high temperature sensing technologies, such as: chemical stability, high electronic conductivity at high temperatures, and thermal expansion coefficient match to thermal protective insulation. In this work various doped lanthanum chromites were prepared, the electrical, thermoelectric, and thermomechanical properties were modelled and experimentally measured for the obtained systems. Compositions were then processed into thick film and temperature sensors and tested at high temperatures. To stablish stability under harsh conditions, post-mortem microstructure and chemical composition was characterized after extended testing cycles.
Proceedings Inclusion? Planned: At-meeting proceedings


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