Abstract
Irradiated by infrared laser, the surface reducibility and adsorbability of Cu-Cr complex could be improved, owing to the interaction of photo-fragmentation and laser texturing. Analyzed by the binding energy spectra and the auger spectra, the valence states of chromium ion and copper ion were +3 and +1 after radiation respectively, which still had the reducibility to release electrons. In contrast with the near-infrared (NIR)1 064 nm and mid-infrared (MIR) 10 600 nm laser at the same average output power of 15 W, the reduced metal percentage in the Cu-Cr complex was obviously distinguished at the depth from nanometer to micron. After chemical plating, the average coating thickness and mean-square deviation of the NIR sample were 11.61 μm and 0.30 for copper layer, and 2.69 μm and 0.08 for nickel layer. The results were much better than those of the MIR sample.
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Supported by the National Basic Research Program of China (“973” Program, No. 2010CB327800), National Natural Science Foundation of China (No. 11004150) and Postdoctoral Science Foundation of China (No. 20090460690).
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Wang, M., Song, F., Zhao, M. et al. Surface modification of Cu-Cr complex by NIR and MIR laser. Trans. Tianjin Univ. 20, 36–41 (2014). https://doi.org/10.1007/s12209-014-2104-2
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DOI: https://doi.org/10.1007/s12209-014-2104-2