Surface Properties of Aluminum-Silicon Alloy Irradiated by Picosecond Laser

This paper deals with the trial-fabrication processes of Aluminum-Silicon alloy realized by irradiation of picosecond laser pulses. Formation processes of morphology were analyzed from the time point of view. Quality of alloy was tested by both the electronic microscope and energy dispersive spectrometer (EDS). Parameters of pulses and ways of scanning have great effect on the appearance and distribution of compositions. Experiments illustrate that picosecond pulses are available in Al-Si alloy, more important, it could avoid the unwonted Al spiking which present elsewhere in the traditional high temperature sinter of Aluminum and Silicon.