陶瓷-金属针封开裂问题研究

Studies on Cracking in Ceramic-metal Pin Sealing

针封作为陶瓷-金属封接类型之一,封接难度很大,封接界面常常出现微观开裂;研究了小孔加工磨料粒径、焊针材质以及封接间隙对封接效果的影响,结果表明:采用320目的碳化硼磨料进行小孔加工,选用4J-34的焊针,控制0.15~0.20mm的封接间隙,可以有效避免针封开裂。

As one of ceramic-metal sealing technique,pin sealing is very difficult to realize and microcracks often appear in sealing interface.The effect on sealing of abrasive particle size of micro hole-making,material of welding pin and the sealing gap and the sealing gap were studied in this work.The results showed that cracking could be effectively eliminated by using 320-mesh boron carbide abrasive particle,4J-34 welding pin and a sealing gap of 0.15~0.20 mm.