高耐熱Al-Fe-Cu鋁合金接合線開發之研究

鋁合金線目前作為功率元件等大電流通電用的半導體配線材之用。近年來，航空、汽車和深井鑽探應用所需功率要求越來越高，也意味著元件接合面遇到高溫問題。本研究主要目的為：開發高純淨度鋁合金線，選用4N以上的純鋁作為基材，搭配鐵（0.7%），銅（0.1~0.2%）等元素提升強度及耐熱性。經由鑄錠、擠製、冷抽等步驟可以得到線徑0.378 mm之線材，所得性質：破斷強度≧61.73MPa、延伸率≧18%、導電率IACS62%以上最適合。

關鍵字

半導體封裝；功率元件；耐熱鋁合金線

並列摘要

The aluminum alloy wire is used semiconductor wiring for energizing a large current such as a power element currently. In recent years, the requirements ever-increased power for aerospace, automotive, and deep well drilling applications, it's means that the component joint faces a high temperature problem. The purpose of the study is to develop high-purity aluminum alloy wire, using pure aluminum of 4N , add 0.7 wt % Fe , 0.1~0.2 wt % Cu and other alloy elements to enhance strength and heat resistance , it's can obtain 0.378 mm wire of through casting, extrusion, cold drawing , the suitable properties: fracture ≧ 61.73 MPa, elongation is ≧ 18%, electrical conductivity IACS ＞ 62%.