不同贮存环境下SCB电极塞的失效机理  

Failure Mechanism of SCB Electrode Plugs under Different Storage Conditions

作　　者：李芳[1] 张蕊[1] 都振华[1] 崔菲菲[2] 周德鑫[2] 王晟[2] 付东晓[1] 李庚[1] 

机构地区：[1]陕西应用物理化学研究所,陕西西安710061 [2]海军装备部,北京100841

出　　处：《含能材料》2015年第2期168-172,共5页Chinese Journal of Energetic Materials

摘　　要：为获取半导体桥(SCB)火工品在长贮过程中的失效模式和失效机理,用加速寿命试验、电阻试验和扫描电镜试验,研究了某不镀金SCB电极塞在不同环境下贮存前后的电阻和形貌变化。结果表明,单一温度(71℃)应力未导致SCB电极塞腐蚀和电阻增大。温湿度(80℃,RH=95%)应力导致SCB电极塞脚线的缓慢腐蚀和电阻的轻微增大。在温湿度(80℃,RH=95%)应力下,粘有盐水的SCB电极塞贮存后焊点出现严重腐蚀现象。得出了氯离子加速SCB电极塞的腐蚀,且焊点的腐蚀程度可用SCB电极塞阻值大小来判断的结论,即SCB电极塞的阻值越大,焊点的腐蚀程度越深。To acquire the failure mode and failure mechanism of semiconductor bridge （SCB） initiator in the process of long-term storage, the changes in resistance and appearance of SCB electrode plugs before and after storage in various environment stress were studied by accelerated life test, resistance test and scan electron microscope test. Results show that a single temperature （71℃ ） stress does not cause the corrosion of SCB electrode plugs and accretion of resistance. Temperature and humidity （80 ℃, RH =95% ） stress can cause slow corrosion of leading wire of SCB electrode plugs and resistance adding slightly. Under the temperature and humidity（80 ℃, RH =95% ） stress, SCB electrode plugs with salt water after storage appear serious corrosion phenomenon. A conclusion of accelerating the corrosion of SCB electrode plugs by chlorine ion and corrosion degree of judging the soldering joints by resistance size of SCB electrode plugs is obtained. Namely the greater the resistance of SCB electrode plug, the deeper the corrosion degree of bridge or soldering joints

关 键 词：火工品 SCB电极塞 加速寿命试验 腐蚀 

分 类 号：TQ560.1[化学工程—炸药化工]