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发明授权
CN107162571B 一种多层片式NTC热敏电阻器陶瓷材料及其制备方法 有权 转让

一种多层片式NTC热敏电阻器陶瓷材料及其制备方法
摘要：
本发明提供一种多层片式NTC热敏电阻器陶瓷材料及其制备方法，所述材料包括主成分和掺杂剂：所述主成分包括如下重量百分比的组分：52％‑71％的MnO2、16％‑33.5％的Ni2O3、2％‑9.5％的Al2O3；所述掺杂剂包括如下重量百分比的组分0.5％‑2％的TiO2、0.5％‑3％的Y2O3和助烧剂1％‑3％的BaCu(B2O5)。制备的多层片式NTC热敏电阻器陶瓷材料具有热稳定性高、低温烧结的特点，其电阻率为100KΩ.mm～150KΩ.mm，材料常数为4000K～4350K，电阻率老化系数小于2％，抗弯强度高于80MPa。
摘要（英）：

The invention provides a multilayer-chip NTC thermal resistor ceramic material and a preparation method thereof. The material comprises a main ingredient and a dopant, wherein the main ingredient is prepared from the following components in percentages by weight: 52-71% of MnO2, 16-33.5% of Ni2O3 and 2-9.5% of Al2O3; and the dopant is prepared from the following components in percentages by weight: 0.5-2% of TiO2, 0.5-3% of Y2O3 and a sintering aid and 1-3% of BaCu (B2O5). The prepared multilayer-chip NTC thermal resistor ceramic material has the characteristics of high thermal stability and low-temperature sintering, the resistivity of the multilayer-chip NTC thermal resistor ceramic material is 100Komega.mm-150Komega.mm, the material constant is 4,000K-4350K, the resistivity ageing coefficient is smaller than 2%, and the bending strength is higher than 80MPa; the sintering temperature when the thermal resistor ceramic material and Ag/Pd slurry are co-fired can be reduced; the problem of cracking when the thermal resistor ceramic material and the Ag/Pd slurry are co-fired and the problem of burning loss of an Ag/Pd electrode are solved; and low-temperature dense sintering when the multilayer-chip NTC thermal resistor ceramic material and the Ag/Pd slurry are co-fired is achieved.

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