95瓷金属化及上釉新工艺的研究  

Study on 95 alumina ceramic metallizing and glazing technique(In Chinese)

作　　者：周群 王玮 

机构地区：[1]核工业第八研究所,上海201800

出　　处：《中国核科技报告》2007年第2期87-93,共7页China Nuclear Science and Technology Report

摘　　要：电加热器是核电站稳压器中的高可靠性部件。因其具有特殊的环境和使用要求,它的接插件采用釉化95瓷与特种金属封接的方式。由于在传统的封接工艺中,都是先将陶瓷上好釉,再以釉化后的陶瓷进行金属化封接,这样就常常导致釉化瓷在高温金属化时发生飞釉而失去光洁的釉面,而对能耐金属化高温的瓷釉配方的研究无法得到理想的结果。同时,进行低温金属化试验得到的封接强度也太低。在此情形下,依据现有条件,本文提出了一种有别传统的陶瓷金属化与上釉的新工艺——先金属化后上釉,既保证了高温金属化带来的较高的封接强度,又避免了高温中发生飞釉现象。经过多种比较和试验,证明这种工艺是可行的,检验数据表明可以满足需要。此项研究已在接插件上得到初步应用。Electric heater is a component of pressurizer in NPP.So the connector of heater must suit for special requirement with high reliability.It need join 95% alumina ceramic and special metal together.Traditional technique is to glazing ceramic at first,then sintering metal powder on ceramic.It result in melting glaze when metallizing at high temperature.The research on high temperatue glaze hasn't got ideal result.In another way,the experiments prove low tem- perature metallizing couldn't get enough strength.Base on present conditions, a new technique is introduced.It is first metallizing then glazing.It can not on- ly provide high strength with high temperature metallizing,but also avoid melting glaze at high temperature.Compared with other ways,the experiments prove it is feasible.The test data can satisfy requirement.This research has been put into production.

关 键 词：95瓷 瓷釉 金属化 

分 类 号：TQ174[化学工程—陶瓷工业]