以二氧化钌和氧化铜的混合物为功能相制备出不锈钢基厚膜PTC热敏电阻浆料.研究了功能相与玻璃相的配比、功能相的粒度对厚膜电阻方阻及电阻温度系数(TCR)的影响规律.结果表明:固定浆料中玻璃相的成分与含量(30wt%),控制功能相中RuO2的比例(45.4wt%～88.9wt%)或功能相的粒度(0.30～1.0μm),可制得具有不同方阻(1.5～12.8Ω/□)和TCR(2100～2900×10-6/℃)的厚膜PTC热敏电阻.
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