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文中对管柱上金-铝键合的相连方法,在高温下因生成有害的金属间化合物而失效的机理进行了初步分析,其主要原因是称为“白斑”的物质所引起;而管柱上金-铝键合的互连,在煮盐水中所引起的失效是电化学腐蚀。 在金属圆管壳的柯伐柱端面,进行机械研磨、抛光后,分别“用甲苯、丙酮、乙醇清洗,用选择性蒸发法敷铝,最后于真空炉中进行一定时间的热处理而成。 以铝-铝键合的互连系统和金-铝键合的互连系统进行了对比加速试验,300℃高温贮存224小时后,用测克计检查其键合点的抗拉强度,金-铝键合的互联,绝大部分脱键,其拉力值为零;而铝-铝键合的互联,大部分在铝丝中间拉断,其拉力值0.5～1克。 煮盐水的对比试验明显可以看出,敷铝管壳的铝丝与柯伐柱敷铝处的键合点,大部分是完好的;而镀金管壳的铝丝与柯伐柱镀金处的键合点,绝大部分被腐蚀断。 实验结果明显表明,铝-铝互连系统优越于金-铝互联系统。 文中对加速试验的结果有实验数据,并列有表格和样品照片。
In this paper, a preliminary analysis of the mechanism of the connection of gold-aluminum bonds on the column to failure due to the formation of detrimental intermetallic compounds at high temperatures is mainly due to the substance called “white spot”; whereas the column On gold - aluminum bonded interconnects, the failure caused by cooking salt water is electrochemical corrosion. Coke column in the metal cylinder shell surface, the mechanical grinding, polishing, respectively, "with toluene, acetone, ethanol, aluminum evaporation by selective evaporation, and finally in a vacuum furnace for a certain period of time from the heat treatment to Aluminum-aluminum bonded interconnection system and gold-aluminum bonded interconnection system were accelerated contrast test, stored at 300 ℃ for 224 hours at high temperature, check the tensile strength of its bonding point with a gram meter, gold-aluminum bond The interconnection, the vast majority of off-key, the pull value is zero; and aluminum - aluminum bonding of the Internet, most of the pull off in the middle of the aluminum wire, the pull value of 0.5 to 1 grams of boiling water contrast test obviously can see Exposed aluminum clad aluminum wire and Cooper column at the aluminum bonding point, most of them are intact; and gold-plated shell aluminum wire and coke column gold at the bonding point, the vast majority of corrupted. The experimental results clearly show that the aluminum-aluminum interconnection system is superior to the gold-aluminum interconnection system.The experimental data of the accelerated test results are presented in the paper with the tables and sample photos.