| 摘要 |
<p>PURPOSE:To contrive improvement in the electric characteristics such as thermal loss, deterioration due to lightning impulse, anti-lightning strength and the like by a method wherein the title resistor is mainly composed of zinc oxide, and amorphous silicon oxide in globular fine grains having uniform particle-size is added thereto. CONSTITUTION:SiO2 a subsidiary ingredient, is formed into amorphous particles having spherical shapes and a uniform particle size when the main component of ZnO and other additive components are mixed and they are wet-mixed with an organic binder. As a result, the particle-size segregation and the specific gravity segregation in a slurry are suppressed, and compositional distribution is stabilized. Also in sinterability, the reaction of amorphous SiO2 with the main component of ZnO is made to proceed smoothly and uniform; unreacted SiO2 is not generated by the contraction in sintering, and the generation of voids is reduced. As a result, a non-linearly voltage-dependent resistor having improved electric characteristics such as thermal loss, lightning impulse deterioration, strength against lightning impulse and the like, can be obtained.</p> |
