PTC thermistor

The friction and wear behaviour and the positive temperature coefficient (PTC) characteristic of the composites were investigated.

采用共混法制備了以低密度聚乙烯為基體的含碳黑的導電復合材料 ,考察了導電復合材料的摩擦磨損性能及正溫度系數特性 ,同時探討了導電復合材料的摩擦熔融現象對其摩擦磨損性能的影響 。

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.

當傳感器在２ｍＡ的正向偏置電流下，由于少數載流子的不連續性以及多數載流子的注入，傳感器電阻的正溫度系數（ＰＴＣ）區拓寬到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.

在兩種還原氣氛中燒結制備低阻Ni/(Ba,Sr)TiO3復合正溫度系數(positive temperature coefficient,PTC)材料,通過X射線光電子能譜儀研究復合材料表面鎳的存在價態。