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Anti-reducing atmosphere PTC (Positive Temperature Coefficient) thermistor ceramic material and preparation method thereof
The invention discloses an anti-reducing atmosphere PTC (Positive Temperature Coefficient) thermistor ceramic material, which is composed of basic PTC ceramic powder based on lead barium titanate and a compound additive material of an chalcogen element tellurium, and the additive material comprises TeO2, TeO3 and other compounds containing Te. According to the PTC thermistor ceramic material provided by the invention, the room-temperature resistivity is 20-200K omega cm, the Curie temperature Tc is 140-260 DEG C, the nonlinear coefficient is controllable and adjustable in a range of 5-49%, and the long-term working withstand voltage drop in a reducing atmosphere is less than 10%. The PTC heating element prepared by the invention can well tolerate the reducing atmosphere, the influence of the reducing atmosphere on the performances such as voltage resistance, impact current, heating power, surface temperature and the like is small, and the use reliability of the PTC heating element is greatly improved.
本发明公开了一种抗还原气氛的PTC热敏电阻陶瓷材料，由基于钛酸铅钡的基础PTC陶瓷粉料和氧族元素碲的化合物添加材料组成，所述添加材料包括：TeO2、TeO3，及其他含Te的化合物。本发明提供的PTC热敏电阻陶瓷材料的室温电阻率在20～200KΩcm，居里温度Tc在140～260℃，非线性系数在5‑49％范围内可控可调，还原气氛中长期工作耐压下降＜10％。由本发明制备的PTC加热元件，能够较好地耐受还原气氛，其耐电压强度、冲击电流、加热功率、表面温度等性能受还原气氛的影响较小，PTC加热元件的使用可靠性大大增加。
Anti-reducing atmosphere PTC (Positive Temperature Coefficient) thermistor ceramic material and preparation method thereof
The invention discloses an anti-reducing atmosphere PTC (Positive Temperature Coefficient) thermistor ceramic material, which is composed of basic PTC ceramic powder based on lead barium titanate and a compound additive material of an chalcogen element tellurium, and the additive material comprises TeO2, TeO3 and other compounds containing Te. According to the PTC thermistor ceramic material provided by the invention, the room-temperature resistivity is 20-200K omega cm, the Curie temperature Tc is 140-260 DEG C, the nonlinear coefficient is controllable and adjustable in a range of 5-49%, and the long-term working withstand voltage drop in a reducing atmosphere is less than 10%. The PTC heating element prepared by the invention can well tolerate the reducing atmosphere, the influence of the reducing atmosphere on the performances such as voltage resistance, impact current, heating power, surface temperature and the like is small, and the use reliability of the PTC heating element is greatly improved.
本发明公开了一种抗还原气氛的PTC热敏电阻陶瓷材料，由基于钛酸铅钡的基础PTC陶瓷粉料和氧族元素碲的化合物添加材料组成，所述添加材料包括：TeO2、TeO3，及其他含Te的化合物。本发明提供的PTC热敏电阻陶瓷材料的室温电阻率在20～200KΩcm，居里温度Tc在140～260℃，非线性系数在5‑49％范围内可控可调，还原气氛中长期工作耐压下降＜10％。由本发明制备的PTC加热元件，能够较好地耐受还原气氛，其耐电压强度、冲击电流、加热功率、表面温度等性能受还原气氛的影响较小，PTC加热元件的使用可靠性大大增加。
Anti-reducing atmosphere PTC (Positive Temperature Coefficient) thermistor ceramic material and preparation method thereof
一种抗还原气氛的PTC热敏电阻陶瓷材料及其制备方法
ZHU XINGWEN (author) / ZHANG NAN (author) / JIA XIAOJING (author)
2023-03-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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