【摘要】 报道了低电阻率高性能ＰＴＣＲ陶瓷和元件的制备及其性能。采用高纯原料和特定的烧成工艺方法，得到了居里温度分别为１８０℃和９０℃，室温电阻率分别为５０Ω．ｃｍ和３０Ω·ｃｍ，可应用于汽车歧管加热器和电话交换机过电流保护器的ＰＴＣＲ材料和元件。更多还原

【Abstract】 Two kinnds of high performance and low resistivity PTCR ceramic materials and related elements areprepared by use of the specific sintering schedule and preparing method. One has the Curie point of 180℃and the volume resistivity of 5 0Ω.cm,and the other,90℃ and 30Ω· cm,which are successfully used inauto manifold heaters and over-current protectors for telephone exchangers,respectively.更多还原