Indium Tin Oxide Thin-Film Thermocouple Probe Based on Sapphire Microrod

Deng, Jinjun; Zhang, Linwei; Hui, Liuan; Jin, Xinhang; Ma, Binghe

doi:10.3390/s20051289

Cited by 14 publications

(4 citation statements)

References 13 publications

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“…Compared with WRe26/In 2 O 3 probe-type TFTCs we published in RSI [24] (reached 93.7 mV at 700 • C and failed at higher temperature), the performance has been greatly improved. Compared with the traditional ITO/In 2 O 3 probe based on a ceramic substrate (maximum 871 • C) [25], the maximum operating temperature has increased (1100 • C).…”

Section: Introductionmentioning

confidence: 98%

High-Temperature-Sensing Smart Bolt Based on Indium Tin Oxide/In2O3 Thin-Film Thermocouples with Nickel-Based Single-Crystal Superalloy via Screen Printing

et al. 2022

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In this study, thin-film thermocouples (TFTCs) were combined with a smart bolt to design a smart bolt that can directly test high temperature in service monitoring and parameter calculation for gas turbine structure design. The first-principles calculation was used to analyze the design of the surface properties of nickel-based alloys and insulating layers, and finite element analysis was used to optimize dimension parameters by controlling the thermal stress matching of insulating layers and sensitive layers. The effect of the glass powder with different particle sizes on the microstructure of the ITO and In2O3 films was studied via SEM. The preferred particle size of the additive glass powder is 400 nm. The XRD pattern shows the (222) peak has the highest intensity. The intensities of the (222) and (622) peaks increase after the heat treatment. The calibration results show that the average Seebeck coefficient of the TFTCs can reach 64.9 μV/°C at 1100 °C with a maximum voltage of 71.4 mV. The repeatability error of the cycles of the sensor after heat treatment is ±1.05%. The repeatability of the sensor is up to 98.95%. The smart bolts were tested for application in small aero engines. It can be seen that under the impact of 1000 °C, the thermal response of the prepared smart bolt is better than that of the K-type armored thermocouple, and the thermal balance is achieved faster. The intelligent bolt sensor proposed in this work has better engineering application prospects owing to its convenience of installation in harsh environments.

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Section: Introductionmentioning

confidence: 98%

High-Temperature-Sensing Smart Bolt Based on Indium Tin Oxide/In2O3 Thin-Film Thermocouples with Nickel-Based Single-Crystal Superalloy via Screen Printing

et al. 2022

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“…However, TFTCs of twodimensional planar-type (figure 1(a)) affected the thermal fluids pattern or lost the accuracy when it was installed in the test space as shown in the figure 1 [16,40]. Furthermore, the whole planar-type TFTCs were placed in the test environment, and the parallel orientation of the electrode film to the flow field led to a temperature rise of the cold end, which challenges the connection between wires and TFTCs [41]. To address this issue, probe-type TFTCs were developed.…”

Section: Introductionmentioning

confidence: 99%

“…airflow erosion (figure 1(d)). Table 1 shows a comparison of the probe TFTC in this study with other TFTCs [16,40,41,[44][45][46]. Compared with the traditional probe-type TFTC (figure 1(b)), the films of the sensor in this study (figure 1(c)) are prepared on the inner plane side of semicylinder and end face of the cylinder.…”

Section: Introductionmentioning

confidence: 99%

Sandwich probe temperature sensor based on In₂O₃-IZO thin film for ultra-high temperatures

Fan,

Tian,

Shi

et al. 2024

Int. J. Extrem. Manuf.

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High-temperature thin-film thermocouples (TFTCs) have garnered significant attention in aerospace and steel metallurgy industries. However, previous studies on TFTCs have primarily focused on the two-dimensional planar type, whose thermal sensitive area has to be perpendicular to the test environment, and therefore affects the thermal fluids pattern or loses the accuracy. In order to address this problem, recent studies have developed the three-dimensional probe-type TFTCs, which can be set parallelly to the test environment. Nevertheless, the probe-type TFTCs are limited by their measurement threshold and poor stability at high-temperature. To address these issues, in this study, we propose a novel probe-type TFTCs temperature sensor with a sandwich structure. The sensitive layer is compounded with indium oxide (In2O3) doped zinc oxide (ZnO) and fabricated using screen-printing technology. With the protection of sandwich structure on electrode film, the sensor demonstrates robust high-temperature stability, enabling continuous working at 1200 °C above 5 hours with a low drift rate of 2.3 °C/h. This sensor exhibits a high repeatability of 99.3% when measures the low to high temperatures, which is beyond the most existing probe-type TFTCs reported in the literature. With its excellent high-temperature performance, this temperature sensor holds immense potential for enhancing equipment safety in the aerospace engineering and ensuring product quality in steel metallurgy industries.

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“…Indium tin oxide (ITO) and indium oxide (In 2 O 3 ) materials were selected as thermoelectric materials. These materials have a greater thermoelectric output than conventional metallic thermocouples 41 , 42 , maintain chemical stability at high and low temperatures 43 , 44 and have a Seebeck coefficient of up to 224 μV/°C 45 . The preparation of the thermopile was carried out using screen printing.…”

Section: Introductionmentioning

confidence: 99%

Highly sensitive flexible heat flux sensor based on a microhole array for ultralow to high temperatures

Li,

Tian,

Zhang

et al. 2023

Microsyst Nanoeng

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With the growing demand for thermal management of electronic devices, cooling of high-precision instruments, and biological cryopreservation, heat flux measurement of complex surfaces and at ultralow temperatures has become highly imperative. However, current heat flux sensors (HFSs) are commonly used in high-temperature scenarios and have problems when applied in low-temperature conditions, such as low sensitivity and embrittlement. In this study, we developed a flexible and highly sensitive HFS that can operate at ultralow to high temperatures, ranging from −196 °C to 273 °C. The sensitivities of HFSs with thicknesses of 0.2 mm and 0.3 mm, which are efficiently manufactured by the screen-printing method, reach 11.21 μV/(W/m2) and 13.43 μV/(W/m2), respectively. The experimental results show that there is a less than 3% resistance change from bending to stretching. Additionally, the HFS can measure heat flux in both exothermic and absorptive cases and can measure heat flux up to 25 kW/m2. Additionally, we demonstrate the application of the HFS to the measurement of minuscule heat flux, such as heat dissipation of human skin and cold water. This technology is expected to be used in heat flux measurements at ultralow temperatures or on complex surfaces, which has great importance in the superconductor and cryobiology field.

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Indium Tin Oxide Thin-Film Thermocouple Probe Based on Sapphire Microrod

Cited by 14 publications

References 13 publications

High-Temperature-Sensing Smart Bolt Based on Indium Tin Oxide/In2O3 Thin-Film Thermocouples with Nickel-Based Single-Crystal Superalloy via Screen Printing

High-Temperature-Sensing Smart Bolt Based on Indium Tin Oxide/In2O3 Thin-Film Thermocouples with Nickel-Based Single-Crystal Superalloy via Screen Printing

Sandwich probe temperature sensor based on In₂O₃-IZO thin film for ultra-high temperatures

Highly sensitive flexible heat flux sensor based on a microhole array for ultralow to high temperatures

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Indium Tin Oxide Thin-Film Thermocouple Probe Based on Sapphire Microrod

Cited by 14 publications

References 13 publications

High-Temperature-Sensing Smart Bolt Based on Indium Tin Oxide/In2O3 Thin-Film Thermocouples with Nickel-Based Single-Crystal Superalloy via Screen Printing

High-Temperature-Sensing Smart Bolt Based on Indium Tin Oxide/In2O3 Thin-Film Thermocouples with Nickel-Based Single-Crystal Superalloy via Screen Printing

Sandwich probe temperature sensor based on In2O3-IZO thin film for ultra-high temperatures

Highly sensitive flexible heat flux sensor based on a microhole array for ultralow to high temperatures

Contact Info

Product

Resources

About

Sandwich probe temperature sensor based on In₂O₃-IZO thin film for ultra-high temperatures