Highly oriented platinum/iridium thin films for high-temperature thermocouples with superior precision

The long-term precise high-temperature measurement of thin-film thermocouples (TFTCs) has attracted attention due to the capability of instantaneous temperature detection. However, related technologies have seen slow development, and there is no one standard TFTC yet. Here, we focus on a new strateg...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2022-03, Vol.24 (1), p.6163-6168
Main Authors: Ma, Kexin, Cao, Lili, Luo, Fei, Zhou, Haitao, Liu, Dabo, Luo, Bingwei, Xu, Yi, Cui, Jinting, Zhao, Xiaohui
Format: Article
Language:English
Subjects:
Defects
High temperature
Interface stability
Iridium
Platinum
Polynomials
Temperature measurement
Thermocouples
Thin films
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Summary:The long-term precise high-temperature measurement of thin-film thermocouples (TFTCs) has attracted attention due to the capability of instantaneous temperature detection. However, related technologies have seen slow development, and there is no one standard TFTC yet. Here, we focus on a new strategy of reducing alloys for the easy preparation and performance enhancement of TFTCs via nanostructure and interface design. To this end, we fabricated a platinum/iridium (Pt/Ir) pure-element TFTC with a well matched interface and few defects, which demonstrated excellent long-term service stability over a high-temperature range. The corresponding polynomial fitting coefficients were ≥0.99999, indicating the accurate acquisition of temperature data. A reduced deviation (
ISSN:1463-9076
1463-9084
DOI:10.1039/d1cp05196b