Low temperature fired positive temperature coefficient resistors |
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Authors: | In-Chyuan Ho Huey-Lin Hsieh |
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Affiliation: | (1) New Materials R& D Department, China Steel Corp., Hsiao-Kang, P.O. Box 47-29, 81233 Kaohsiung, Taiwan, Republic of China |
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Abstract: | Through the addition of BN as a sintering aid, Y-doped BaTiO3-based positive temperature coefficient resistors (PTCR) can be fabricated at temperatures below 1200‡C, which is much lower
than is required when conventional sintering aids such as silica or A12O3, SiO2, and TiO2 (AST) are used. In comparison with the PTCR containing SiO2, the low-temperature-fired thermistor shows an enhanced PTC effect and a much higher temperature of resistivity maximum.
Electrical properties of the BN-added BaTiO3, (Ba,Sr)TiO3, and (Ba,Pb)TiO3 ceramics were discussed. |
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Keywords: | Acceptor barium titanate donor positive temperature coefficient resistor (PTCR) resistivity sintering thermistor |
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