Femtosecond Laser Direct Joining of Copper with Polyethylene Terephthalate
Femtosecond Laser Direct Joining of Copper with Polyethylene Terephthalate
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DOI：
10.2320/matertrans.md201229
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发表时间：
2013-06
影响因子：
1.2
通讯作者：
T. Sano;Shogo Iwasaki;Y. Ozeki;K. Itoh;A. Hirose
中科院分区：
文献类型：
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作者：
T. Sano;Shogo Iwasaki;Y. Ozeki;K. Itoh;A. Hirose
我们成功地使用飞秒激光脉冲将铜与聚对苯二甲酸乙二醇酯 (PET) 直接连接，该脉冲通过 PET 聚焦到铜表面，铜表面在激光照射之前热粘附到 PET 上。获得了5.5MPa的最大拉伸强度。断裂面的 X 射线光电子能谱表明 Cu 与 PET 之间存在化学键合。样品的 TEM 图像显示没有空隙或裂纹。他们还展示了铜与 PET 在接头界面周围的机械混合物。我们建议激光的超短脉冲宽度能够直接连接这些异种材料，从而避免聚合物材料的石墨化。 [doi:10.2320/matertrans.MD201229]
We succeeded in directly joining Cu with polyethylene terephthalate (PET) using femtosecond laser pulses, which were focused through PET onto the Cu surface which was thermally adhered to PET prior to the laser irradiation. A maximum tensile strength of 5.5MPa was obtained. X-ray photoelectron spectroscopic spectra of the fractured surface suggested the chemical bonding of Cu with PET. TEM images of the sample showed no voids or no cracks. They also showed the mechanical mixture of Cu with PET around the interface of the joint. We suggest that the ultrashort pulse width of the laser enables the direct joining of these dissimilar materials, thereby avoiding graphitization of the polymeric material. [doi:10.2320/matertrans.MD201229]