一、前言我们接受某单位的委托,用电子束焊接如图1所示的工件。这个焊接件要在强腐蚀性的化学溶液中工作,溶液温度比较高,而且有射线照射。任务委托给我们之前,有关单位进行了将高铝瓷金属化,然后进行用焊料焊接的试验。经过较长时间摸索,都不能满足要求,主要原因是还找不到一种焊料能耐得住所要求的工作条 First, the preface We accept commissioned by a unit, with the electron beam welding workpiece as shown in Figure 1. The weldment should work in a highly corrosive chemical solution, the solution temperature is relatively high, and there is radiation. Before the task was entrusted to us, the relevant units conducted a test of metallizing high-alumina ceramics and then welding them with solder. After a long time groping, can not meet the requirements, mainly due to still can not find a solder can withstand the required work strip