Paper Info
Title
Design And Fabrication Of A Thick Film Heat Flux Sensor For Ultra-High Temperature Environment
Abstract
In this paper, a ceramic-based thick film heat flux sensor (TFHFS) to monitor the heat flux in high-temperature environments is described. The TFHFS consists of 130 pairs of Pt-Pt/Rh thermocouples distributed in a serpentine form on a ceramic substrate. An insulator was used to generate the temperature difference, which increases the thermoelectric potential (output voltage) and improves the sensitivity of the proposed TFHFS. There are two pairs of independent thermocouples for temperature monitoring. The screen-printing process is used as the fabrication process. The characterization results indicate that the Pt electrodes and the Pt/Rh electrodes were well connected after sintering at 1350 degrees C, and the thickness and width of the thermocouple electrodes were approximately 20 mu m and 300 mu m, respectively. The test results indicate that the proposed heat flux sensor has a maximum output voltage of approximately 1.44 mV, and the heat flux sensitivities for 3-57 kW/m(2) were well distributed in the range of 0.025-0.030 mV/(kW/m(2)), thereby demonstrating that the fabricated sensor exhibits high sensitivities in the given heat flux range. Furthermore, the reusability investigation indicated that the prepared TFHFS achieves a stable output voltage and a low error level at 50-900 degrees C. Therefore, we assume that the proposed sensor can be used for monitoring the heat flux in harsh applications such as turbomachinery and aerospace industries.
Year
DOI
Venue
2019
10.1109/ACCESS.2019.2958853
IEEE ACCESS
Keywords
DocType
Volume
Ceramic sensor, heat flux sensor, high temperature monitoring, thermocouple
Journal
7
ISSN
Citations 
PageRank 
2169-3536
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Tong Zhang15318.56
Qiulin Tan27916.65
Wen Lyu300.34
Xiao Lu412.10
Jijun Xiong511835.50