【摘要】 采用冷喷涂方法将铝基导电胶涂覆到高 Tc 的 PTC 陶瓷片上,经热固化和后处理得到被铝电极。通过室温电阻检测,温度-电阻曲线,电压-电流曲线测定,以及热循环氧化试验证实了在电性能方面被铝电极与镍银电极一样,在高温性能方面,前者优于后者.并对电极的导电机理进行了讨论。更多还原

【Abstract】 By spraying conductive paine on PTC ceramics,heat-solidifying and after- treating,Al-electrode on PTC ceramics was obtained.The measurement of the resis- tance at R.T.,R-T curve,V-I curveand test of thermal cycle oxidation was taken It was shown that Al-electrode is same as Ni-Ag electrode in electric conductivity, and the former is better than the lat- ter in the property of high temperature. The mechanism of electric conduction was also discussed.更多还原