| 摘要 |
<p>PURPOSE:To obtain a nonlinear resistor excellent both in an electric characteristic and a mechanical characteristic by adding various kinds of additives to zinc oxide being a main component to form a nonlinear resistor primary substance while making an average grain diameter 5-10mum of the primary substance. CONSTITUTION:A nonlinear resistor primary substance 11 is constituted by mixing an additive consisting of bismuth trioxide Bi2O3 (0.25-1.0mol%), antimony oxide Sb2O3 (0.5-2.0mol%), cobalt oxide Co2O3 (0.25-1.0mol%), manganese dioxide MnO2 (0.25-1.0mol%), chromium oxide Cr2O3 (0.1-1.0mol%), nickel oxide NiO (0.1-1.0mol%) and silicon dioxide SiO2 (0.25-2.0mol%) with zinc oxide ZnO as a main component. Further, an insulating film substance 12 is constituted by covering the peripheral surface of the nonlinear resistor primary substance 11 with an insulating material such as glass. Since an average grain diameter of the nonlinear resistor primary substance is made to be in the range of 5-10mum so as to have both of a good electrical characteristic and a good mechanical characteristic.</p> |
