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Fluoride-doped high-temperature negative-temperature-coefficient thermistor material and preparation method thereof
The invention discloses a fluoride-doped high-temperature negative-temperature-coefficient thermistor material and a preparation method. The fluoride-doped high-temperature negative-temperature-coefficient thermistor material is prepared from Sm<2>O<3>, La<2>O<3> and PrF<3> by respectively weighing the above raw materials according to a chemical general formula of La<1-x>PrSmO<3>, wherein X isin a range of 0-0.9, conducting mixing and then succesively performing ball milling, calcining, grinding, forming and high-temperature sintering. By adding the PrF<3> powder, the test temperature zoneof a LaSmO<3>> sample is expanded, and a preparation process is simple; the sensitivity B value of the thermistor material is increased along with the increase of a test temperature; the material isa material with a low resistance value and a high B value in a temperature measurement interval, and is applicable to the fields of temperature alarms and industrial production temperature detection;and therefore, the core problem of low sensitivity of a high-temperature thermosensitive element is solved.
本发明公开了一种氟化物掺杂的高温负温度系数热敏电阻材料及制备方法，该材料是由Sm2O3,La2O3和PrF3为原料，分别按化学通式La1‑xPrxSmO3进行称量混合，其中X=0‑0.9，通过球磨、煅烧、研磨、成型、高温烧结制得高温负温度系数热敏电阻材料。通过添加PrF3粉体实现LaSmO3样品测试温区扩展，具有制备工艺简单；热敏电阻材料的灵敏度B值随着测试温度的增加而增大；该材料在测温区间内为低电阻值高B值材料，适用于温度报警器以及工业生产温度检测领域。从而克服了在高温热敏元件灵敏度较低的核心问题。
Fluoride-doped high-temperature negative-temperature-coefficient thermistor material and preparation method thereof
The invention discloses a fluoride-doped high-temperature negative-temperature-coefficient thermistor material and a preparation method. The fluoride-doped high-temperature negative-temperature-coefficient thermistor material is prepared from Sm<2>O<3>, La<2>O<3> and PrF<3> by respectively weighing the above raw materials according to a chemical general formula of La<1-x>PrSmO<3>, wherein X isin a range of 0-0.9, conducting mixing and then succesively performing ball milling, calcining, grinding, forming and high-temperature sintering. By adding the PrF<3> powder, the test temperature zoneof a LaSmO<3>> sample is expanded, and a preparation process is simple; the sensitivity B value of the thermistor material is increased along with the increase of a test temperature; the material isa material with a low resistance value and a high B value in a temperature measurement interval, and is applicable to the fields of temperature alarms and industrial production temperature detection;and therefore, the core problem of low sensitivity of a high-temperature thermosensitive element is solved.
本发明公开了一种氟化物掺杂的高温负温度系数热敏电阻材料及制备方法，该材料是由Sm2O3,La2O3和PrF3为原料，分别按化学通式La1‑xPrxSmO3进行称量混合，其中X=0‑0.9，通过球磨、煅烧、研磨、成型、高温烧结制得高温负温度系数热敏电阻材料。通过添加PrF3粉体实现LaSmO3样品测试温区扩展，具有制备工艺简单；热敏电阻材料的灵敏度B值随着测试温度的增加而增大；该材料在测温区间内为低电阻值高B值材料，适用于温度报警器以及工业生产温度检测领域。从而克服了在高温热敏元件灵敏度较低的核心问题。
Fluoride-doped high-temperature negative-temperature-coefficient thermistor material and preparation method thereof
一种氟化物掺杂的高温负温度系数热敏电阻材料及制备方法
ZHANG HUIMIN (author) / SANG XU (author) / CHANG AIMIN (author)
2020-12-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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