Stability enhancement of the nitrogen-doped ITO thin films at high temperatures using two-step mixed atmosphere annealing technique

Liu, Zhichun; Liang, Junsheng; Zhou, Hao; Lü, Wenqi; Li, Jian; Wang, Biling; Li, Qiang; Zhao, Xin; Xu, Jun

doi:10.1016/j.apsusc.2022.153508

Cited by 14 publications

(1 citation statement)

References 29 publications

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“…The TCR of most metal strain gauges can be defined according to Formula : TCR = normalΔ R / R 0 normalΔ T × 10 6 where R 0 is the original resistance of the TFSG at 25 °C and Δ R and Δ T are the relative resistance variations of the TFSG and the relative temperature variations of the testing environment, respectively. The resistance drift rate (DR) of strain gauges at high temperatures is defined by Formula : DR = normalΔ R R r e f × 1 normalΔ t where, at the constant temperature point, R ref and Δ R are, respectively, the initial resistance and the value of change in resistance of the TFSG and Δ t is the maintained time. The strain sensing performance of AgPd TFSG was tested by the cantilever beam method (Figure c).…”

Section: Methodsmentioning

confidence: 99%

All-Three-Dimensionally-Printed AgPd Thick-Film Strain Gauge with a Glass–Ceramic Protective Layer for High-Temperature Applications

Zeng,

Chen,

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

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A high-temperature thin/thick-film strain gauge (TFSG) shows development prospects for in situ strain monitoring of hot-end components due to their small perturbations, no damage, and fast response. Direct ink writing (DIW) 3D printing is an emerging and facile approach for the rapid fabrication of TFSG. However, TFSGs prepared based on 3D printing with both high thermal stability and low temperature coefficient of resistance (TCR) over a wide temperature range remain a great challenge. Here, we report a AgPd TFSG with a glass–ceramic protective layer based on DIW. By encapsulating the AgPd sensitive layer and regulating the Pd content, the AgPd TFSG demonstrated a low TCR (191.6 ppm/°C) from 50 to 800 °C and ultrahigh stability (with a resistance drift rate of 0.14%/h at 800 °C). Meanwhile, the achieved specifications for strain detection included a strain sensing range of ±500 με, fast response time of 153 ms, gauge factor of 0.75 at 800 °C, and high durability of >8000 cyclic loading tests. The AgPd TFSG effectively monitors strain in superalloys and can be directly deposited onto cylindrical surfaces, demonstrating the scalability of the presented approach. This work provides a strategy to develop TFSGs for in situ sensing of complex curved surfaces in harsh environments.

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