Abstract
Zinc ferrite (ZnFe2O4) sensitive coatings have been deposited by suspension plasma spraying. The phase constitution of the coatings was characterized by x-ray diffraction while the top surface and cross-sectional morphology of the coatings were inspected by scanning electron microscopy. The response to acetone was tested with the concentration in the range of 25-500 ppm at the working temperature from 175 to 275 °C. The sensors that were deposited at an arc current of 400 A showed better performance than those at 600 A owing to small grain size and high porosity. The sensor response increased with acetone concentration. The optimized sensors showed excellent response/recovery time and selectivity to acetone at 200 °C.
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Acknowledgments
This work is supported by the Jiangsu Natural Science Foundation of China under Grant No. BK20140487, the Natural Science Foundation of China under Grant No. 51402255, the Cooperation Funding of Yangzhou City-Yangzhou University under Grant No. YZ2016254 and Six Talent Peaks Project in Jiangsu Province under Grant No. JXQC-031 and the Testing Center of Yangzhou University.
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You, J., Chen, X., Zheng, B. et al. Suspension Plasma-Sprayed ZnFe2O4 Nanostructured Coatings for ppm-Level Acetone Detection. J Therm Spray Tech 26, 728–734 (2017). https://doi.org/10.1007/s11666-017-0536-7
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DOI: https://doi.org/10.1007/s11666-017-0536-7