公开(公告)号：US3872582A

公开(公告)日：1975-03-25

申请号：US42873773

申请日：1973-12-27

Applicant: MATSUSHITA ELECTRIC IND CO LTD

Inventor： MATSUOKA MICHIO ,  ITAKURA GEN ,  IGA ATSUSHI ,  MASUYAMA TAKESHI

IPC: H01B1/08 ,  H01C7/102 ,  H01C17/02 ,  H01C1/14 ,  H01C17/00

CPC classification number: H01C7/102 ,  H01B1/08 ,  H01C17/02 ,  Y10T29/49082 ,  Y10T29/49101

Abstract: A process for making a voltage dependent resistor which has a zinc oxide sintered body which itself has voltage dependent properties. The process is made up of the steps of: (1) providing a formed body of a powder mixture having as a major part zinc oxide and additive; (2) coating on the side surfaces of the formed body a paste having as the solid ingredient composition at least one member selected from the group of a) more than 50 mole % of silicon dioxide (SiO2), and less than 50 mole % of bismuth oxide (Bi2O3), b) the same composition as that of said additive, c) more than 30 mole percent of antimony oxide (Sb2O3) and less than 70 mole percent of bismuth oxide (Bi2O3), and d) more than 50 mole percent of indium oxide (In2O3) and less than 50 mole percent of bismuth oxide (Bi2O3); (3) sintering the coated body; and (4) applying electrodes to opposite surfaces of the sintered body.

Abstract translation: 制造具有本身具有电压依赖性的氧化锌烧结体的电压依赖电阻器的方法。 该方法由以下步骤组成：（1）提供具有主要部分氧化锌和添加剂的粉末混合物的成形体; （2）在成形体的侧面上涂覆具有固体成分组合物的糊剂，所述糊剂选自a）超过50摩尔％的二氧化硅（SiO 2）和小于50摩尔％的二氧化硅（SiO 2）中的至少一种， 氧化铋（Bi 2 O 3），b）与所述添加剂相同的组成，c）大于30摩尔％的氧化锑（Sb 2 O 3）和小于70摩尔％的氧化铋（Bi 2 O 3），和d）大于50摩尔 氧化铟（In 2 O 3）的百分比和小于50摩尔％的氧化铋（Bi 2 O 3）; （3）烧结涂层体; 和（4）将电极施加到烧结体的相对表面。