NTC 세라믹 써미스터의 제조공정 및 특성
Manufacturing Processing and Properties for NTC Ceramic Thermistors
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NTC thermistors of Y-Al-Mn-Fe-Ni-O systems were fabricated by using normal ceramic processing for wide temperature range measurement. Pt-Rh alloy as electrodes was inserted into the body during the forming process to increase the reliability of high temperature and to decrease the contact resistance. The properties were analyzed by XRD, SEM and resistance measurement. The mixture of Y0.2Al0.1Mn0.27Fe0.16Ni0.27Ox was calcined at 1200oC at a heating rate of a 5oC/min for a dwell time of 2 hours. The formed specimens and the Pt-Rh metal electrodes were co-sintered at 1400oC for 2 hours in air. The specimens show the straight line relationship between the electrical resistance and the temperature over a wide temperature range, indicating NTC thermistor characteristics. The measurement range for NTC thermistor is expanded from 0oC to 600oC.
Abstract
NTC thermistors of Y-Al-Mn-Fe-Ni-O systems were fabricated by using normal ceramic processing for wide temperature range measurement. Pt-Rh alloy as electrodes was inserted into the body during the forming process to increase the reliability of high temperature and to decrease the contact resistance. The properties were analyzed by XRD, SEM and resistance measurement. The mixture of Y0.2Al0.1Mn0.27Fe0.16Ni0.27Ox was calcined at 1200oC at a heating rate of a 5oC/min for a dwell time of 2 hours. The formed specimens and the Pt-Rh metal electrodes were co-sintered at 1400oC for 2 hours in air. The specimens show the straight line relationship between the electrical resistance and the temperature over a wide temperature range, indicating NTC thermistor characteristics. The measurement range for NTC thermistor is expanded from 0oC to 600oC.
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