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Preparation method of manganese-doped calcium zirconate high-temperature negative temperature coefficient thermistor material
The invention discloses a preparation method of a manganese-doped calcium zirconate high-temperature negative temperature coefficient thermistor material, according to the method, calcium carbonate, zirconium dioxide and manganese dioxide are used as raw materials, synthesis is performed through a traditional solid phase method, and the thermistor material has the characteristics of wide temperature range and high sensitivity. The method comprises the following steps: pre-sintering powder with different manganese doping amounts by adopting a solid phase method, then carrying out single-axis extrusion under the pressure of 15MPa to form a wafer, then carrying out isostatic pressing on the wafer under the pressure of 300MPa for 180 seconds, carrying out heat preservation at 1500 DEG C for 10 hours to obtain thermistor ceramic, then uniformly smearing platinum paste on two surfaces of the ceramic, taking a platinum wire as a lead, annealing at 900 DEG C for 30 minutes, and measuring the resistance value within the temperature range of 200-1200 DEG C, the NTC thermistor material with the wide temperature range has the B value of 19521-9526 K and the rho 800 of 1.84 * 10 < 6 >-2.63 * 10 < 3 > omega.cm. The electrical performance parameters show that the NTC thermistor material has good application potential and can be applied to the field of high-temperature negative temperature coefficient thermistor sensors.
本发明公开了一种锰掺杂锆酸钙高温负温度系数热敏电阻材料的制备方法，该方法以碳酸钙，二氧化锆，二氧化锰为原料，通过传统固相法合成，该热敏电阻材料具有温区宽、灵敏度高的特点。采用固相法预烧不同锰掺杂量的的粉体，然后在15MPa的压力下单轴挤压成圆片，再将圆片在300MPa的压力下等静压180秒，在1500℃下保温10h，得到热敏电阻陶瓷，然后在陶瓷的两面均匀涂抹铂浆，以铂丝做引线，在温度900℃下退火30min，电阻值在200‑1200℃的温度范围内测量，即得B值和ρ800分别在19521‑9526 K，1.84×106‑2.63×103Ω·cm之间的具有宽温区的NTC热敏电阻材料，这些电性能参数表明该热敏电阻具有良好的应用潜力，可应用于高温负温度系数热敏电阻传感器领域。
Preparation method of manganese-doped calcium zirconate high-temperature negative temperature coefficient thermistor material
The invention discloses a preparation method of a manganese-doped calcium zirconate high-temperature negative temperature coefficient thermistor material, according to the method, calcium carbonate, zirconium dioxide and manganese dioxide are used as raw materials, synthesis is performed through a traditional solid phase method, and the thermistor material has the characteristics of wide temperature range and high sensitivity. The method comprises the following steps: pre-sintering powder with different manganese doping amounts by adopting a solid phase method, then carrying out single-axis extrusion under the pressure of 15MPa to form a wafer, then carrying out isostatic pressing on the wafer under the pressure of 300MPa for 180 seconds, carrying out heat preservation at 1500 DEG C for 10 hours to obtain thermistor ceramic, then uniformly smearing platinum paste on two surfaces of the ceramic, taking a platinum wire as a lead, annealing at 900 DEG C for 30 minutes, and measuring the resistance value within the temperature range of 200-1200 DEG C, the NTC thermistor material with the wide temperature range has the B value of 19521-9526 K and the rho 800 of 1.84 * 10 < 6 >-2.63 * 10 < 3 > omega.cm. The electrical performance parameters show that the NTC thermistor material has good application potential and can be applied to the field of high-temperature negative temperature coefficient thermistor sensors.
本发明公开了一种锰掺杂锆酸钙高温负温度系数热敏电阻材料的制备方法，该方法以碳酸钙，二氧化锆，二氧化锰为原料，通过传统固相法合成，该热敏电阻材料具有温区宽、灵敏度高的特点。采用固相法预烧不同锰掺杂量的的粉体，然后在15MPa的压力下单轴挤压成圆片，再将圆片在300MPa的压力下等静压180秒，在1500℃下保温10h，得到热敏电阻陶瓷，然后在陶瓷的两面均匀涂抹铂浆，以铂丝做引线，在温度900℃下退火30min，电阻值在200‑1200℃的温度范围内测量，即得B值和ρ800分别在19521‑9526 K，1.84×106‑2.63×103Ω·cm之间的具有宽温区的NTC热敏电阻材料，这些电性能参数表明该热敏电阻具有良好的应用潜力，可应用于高温负温度系数热敏电阻传感器领域。
Preparation method of manganese-doped calcium zirconate high-temperature negative temperature coefficient thermistor material
一种锰掺杂锆酸钙高温负温度系数热敏电阻材料的制备方法
XIE YONGXIN (author) / LIU YUYU (author) / ZHANG BO (author) / ZHANG HUIMIN (author) / CHANG AIMIN (author)
2022-08-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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