Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature negative temperature coefficient thermistor material and manufacturing method thereof
The invention discloses a high-temperature negative temperature coefficient thermistor material, which comprises manganese oxide, chromium oxide, aluminum oxide, yttrium oxide and calcium oxide, and is prepared by the following steps: carrying out grinding, pre-sintering, ball-milling, pre-forming, isostatic pressing and finally high-temperature solid-phase sintering to obtain thermistor ceramic, slicing the thermistor ceramic by a semiconductor process, carrying out electric polarization, and scribing the ceramic to obtain small square thermistor sheets; and packaging the small square sheet into the single-ended glass-sealed thermistor. According to the formula designed by the invention, the single-end thermistor with B25/50 = 2100-2850K and R25 = 5-200K can be repeatedly prepared, and the temperature resistance can reach -50 to +900 DEG C; after the material is aged for 1000 hours in an air environment of 600 DEG C, the change rate is less than 5%, so that the thermistor can correspondingly change along with the change of ambient temperature in use; the thermistor can correspondingly change the ambient temperature in real time, the corresponding temperature loss is reduced and the sensitivity of the thermistor is improved; meanwhile, due to the aluminum oxide or calcium oxide, the quality of the thermistor during sintering is improved, and the density of the thermistor is increased.
本发明公开了一种高温用负温度系数热敏电阻材料，包括氧化锰、氧化铬、氧化铝、氧化钇、氧化钙，经过研磨、预烧、球磨、预成型、等静压成型，而后高温固相烧结成热敏电阻陶瓷，再经半导体工艺切片、电极化、划片成热敏电阻小方片，将小方片封装成单端玻封热敏电阻制备而成。通过本发明设计的配方，可以重复性制得B25/50＝2100‑2850K，R25＝5‑200K的单端热敏电阻，耐温可以达到：‑50～+900度；在600度空气环境中老化1000小时，变化率小于5％，使得热敏电阻在使用中，能随着周围温度的变化，做出相应的变化，使得热敏电阻能实时对周围温度做出相应改变，减小相应的温度丢失，增加热敏电阻的灵敏性，同时通过氧化铝或氧化钙，提高热敏电阻在烧结时的质量，增加热敏电阻的密度。
High-temperature negative temperature coefficient thermistor material and manufacturing method thereof
The invention discloses a high-temperature negative temperature coefficient thermistor material, which comprises manganese oxide, chromium oxide, aluminum oxide, yttrium oxide and calcium oxide, and is prepared by the following steps: carrying out grinding, pre-sintering, ball-milling, pre-forming, isostatic pressing and finally high-temperature solid-phase sintering to obtain thermistor ceramic, slicing the thermistor ceramic by a semiconductor process, carrying out electric polarization, and scribing the ceramic to obtain small square thermistor sheets; and packaging the small square sheet into the single-ended glass-sealed thermistor. According to the formula designed by the invention, the single-end thermistor with B25/50 = 2100-2850K and R25 = 5-200K can be repeatedly prepared, and the temperature resistance can reach -50 to +900 DEG C; after the material is aged for 1000 hours in an air environment of 600 DEG C, the change rate is less than 5%, so that the thermistor can correspondingly change along with the change of ambient temperature in use; the thermistor can correspondingly change the ambient temperature in real time, the corresponding temperature loss is reduced and the sensitivity of the thermistor is improved; meanwhile, due to the aluminum oxide or calcium oxide, the quality of the thermistor during sintering is improved, and the density of the thermistor is increased.
本发明公开了一种高温用负温度系数热敏电阻材料，包括氧化锰、氧化铬、氧化铝、氧化钇、氧化钙，经过研磨、预烧、球磨、预成型、等静压成型，而后高温固相烧结成热敏电阻陶瓷，再经半导体工艺切片、电极化、划片成热敏电阻小方片，将小方片封装成单端玻封热敏电阻制备而成。通过本发明设计的配方，可以重复性制得B25/50＝2100‑2850K，R25＝5‑200K的单端热敏电阻，耐温可以达到：‑50～+900度；在600度空气环境中老化1000小时，变化率小于5％，使得热敏电阻在使用中，能随着周围温度的变化，做出相应的变化，使得热敏电阻能实时对周围温度做出相应改变，减小相应的温度丢失，增加热敏电阻的灵敏性，同时通过氧化铝或氧化钙，提高热敏电阻在烧结时的质量，增加热敏电阻的密度。
High-temperature negative temperature coefficient thermistor material and manufacturing method thereof
一种高温用负温度系数热敏电阻材料及其制造方法
ZENG ZHAOTING (Autor:in)
18.05.2021
Patent
Elektronische Ressource
Chinesisch
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