The friction and wear behaviour and the positive temperature coefficient (PTC) characteristic of the composites were investigated.
采用共混法制备了以低密度聚乙烯为基体的含碳黑的导电复合材料 ,考察了导电复合材料的摩擦磨损性能及正温度系数特性 ,同时探讨了导电复合材料的摩擦熔融现象对其摩擦磨损性能的影响 。
When the sensor is forward biased at a current of 2 mA, the range of positive temperature coefficient of the sensor resistance is extended up to +300 C as a result of the minority current discontinuity and majority carrier injection.
当传感器在２ｍＡ的正向偏置电流下，由于少数载流子的不连续性以及多数载流子的注入，传感器电阻的正温度系数（ＰＴＣ）区拓宽到５７３Ｋ（＋３００℃）以上。
The Ni/(Ba,Sr)TiO3 positive temperature coefficient(PTC) composite with low resistivity was sintered in two kinds of reducing atmospheres.
在两种还原气氛中烧结制备低阻Ni/(Ba,Sr)TiO3复合正温度系数(positive temperature coefficient,PTC)材料,通过X射线光电子能谱仪研究复合材料表面镍的存在价态。
