Abstract
Behavior of electrical resistance was examined in room temperature and elevated temperatures up to 1000 °C for two types of SiCCVD fibers with diameters of 140 and 70 μm, respectively. The results showed that electrical resistance showed a good linear relationship with the length of fibers. Electrical resistance decreased as temperature increased, besides, temperature coefficient of electrical resistance was a minus constant, −5.2 × 10−4 °C−1 except that in the first heating. In the first heating, electrical resistance and temperature coefficient increased and had a peak in the range of 550–700 °C owing to the burning of the carbon-rich layer on the fiber surface. It suggested that behavior of electrical resistance of the fibers depended mainly on the carbon core and the carbon-rich layer. It was confirmed that SiCCVD fiber could be used as heating elements for micro-heater and finally a micro-heater using SiCCVD fiber as heating elements was developed.
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Lu, Y., Hao, L. & Hirohashi, M. Behavior of electrical resistance of SiCCVD fiber and development of micro-heater with SiCCVD fiber. J Mater Sci 46, 2085–2090 (2011). https://doi.org/10.1007/s10853-010-5042-y
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DOI: https://doi.org/10.1007/s10853-010-5042-y