配方和工艺对陶瓷线性电阻气孔率的影响研究  

Research of Influence of the Formula and Technology on the Porosity in the Linear Ceramic Resistor

作　　者：王俊波[1] 吴焯军[1] 裴植[1] 陈维 

机构地区：[1]广东电网公司佛山供电局,广东佛山528000 [2]西安交通大学,西安710049

出　　处：《电瓷避雷器》2013年第4期75-77,84,共4页Insulators and Surge Arresters

摘　　要：陶瓷线性电阻属于多孔功能陶瓷,必须具有一定的气孔率,才能满足做断路器合闸电阻时短时接入的热容量要求。实验表明:配方中炭黑、钠长石、氧化铁的摩尔百分数分别为0.75%、1.05%和0.5%,且在坯料含水率为6%(质量分数)、成型压力为1 300 kg/cm2的工艺条件下,能够使得电阻片的气孔率严格控制在25%左右。The closing resistor used in high vohage circuit breaker is a kind of porous linear ceramic resistor which should be of a certain porosity to meet the heat capacity when it is inserted in circuit in order to limit the overvohage. The influence of the formula and technology are investigated. The results show that the best dosage of admixture is carbon black 0.75% ,albite 1.05%, ferric oxide 0.5%; the optimum moisture is 6%; the optimum pressure is 1 320 kg/cm2; which can make the porosity stability around in 25%.

关 键 词：陶瓷线性电阻 配方 工艺 气孔率 

分 类 号：TQ174.1[化学工程—陶瓷工业]