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发明公开
CN108231718A 具有金包覆层的金银铝铜合金复合键合丝及其制造方法 无效 - 撤回

具有金包覆层的金银铝铜合金复合键合丝及其制造方法
摘要：
一种具有金包覆层的金银铝铜合金复合键合丝，其特征在于包括芯线和包覆在芯线外面的金包覆层；所述芯线按重量计含有Ag 10‑30%，Al 5‑10%，Cu 2‑200 ppm，余量为金；所述金包覆层的厚度为20‑200nm。本发明还提供上述具有金包覆层的金银铝铜合金复合键合丝的一种制造方法。本发明的金银铝铜合金复合键合丝打线作业窗口（window）较大，可提升线材在焊点B点的强度，有效改善线材的抗老化能力与抗氧化能力，且成本较低。
摘要（英）：

The invention provides a gold, silver, aluminum and copper alloy composite bonding wire with a golden cladding layer, which is characterized by comprising a core wire and the golden cladding layer coating the exterior of the core wire; the core wire contains 10-30 weight percent of Ag, 5-10 weight percent of Al, 20-200 ppm of Cu and the balance of gold; the cladding layer has a thickness of 20-200 nm. The invention further provides a manufacturing method of the gold, silver, aluminum and copper alloy composite bonding wire with the golden cladding layer. The gold, silver, aluminum and copperalloy composite bonding wire provided by the invention has the benefits that a lineup homework window is larger, the strength of a wire rod at a welding point B can be improved, the aging resistance and the oxidation resistance of the wire rod are effectively improved, and the cost is lower.

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