| 摘要 |
PURPOSE:To obtain a copper wire for bonding which is useful and utilizable as a substitute for a gold wire, by incorporating trace amounts of 1 or >=2 kinds among Ti, Cr, Mn, Fe, Ni, and Co to high-purity Cu. CONSTITUTION:Among the elements in group IV of the periodic table, 1 of >=2 kinds among, by weight, 5-50ppm Ti, 5-50ppm Cr, 5-50ppm Fe, 10-100ppm to Co having a high purity of >=99.99%. Ti, Fe, Ni, and Co are useful for the improvement of thermal resistance, and Mn and Cr are also useful for the improvement of corrosion resistance. |
