2 September 2003 Surface alloying of metals by nanosecond laser pulses under transparent overlays
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Proceedings Volume 5121, Laser Processing of Advanced Materials and Laser Microtechnologies; (2003) https://doi.org/10.1117/12.515579
Event: Laser Processing of Advanced Materials and Laser Microtechnologies, 2002, Moscow, Russian Federation
Abstract
A thorough experimental study was made of the processes determining formation of metastable surface alloys in a film-substrate system (Au-Ni, Sn-Cr) irradiated by laser pulses of nanosecond duration. The irradiation was performed in conventional conditions (on air) and, following the new method, through transparent overlay. A physical model of laser induced processes has been developed. The model predicts an increases of the depth of the melt, elevation of the liquid-phase temperature, rise of the diffusion speed of atoms in the liquid phase, and decrease of the cooling rate of the alloy during irradiation through the transparent overlay.
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Igor Smurov, A. Smirnov, N. Martsenyuk, V. Yu. Fominski, "Surface alloying of metals by nanosecond laser pulses under transparent overlays", Proc. SPIE 5121, Laser Processing of Advanced Materials and Laser Microtechnologies, (2 September 2003); doi: 10.1117/12.515579; https://doi.org/10.1117/12.515579
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