Product Code: ICAL06_M205

Microstructures on Metal Plate Produced with Femtosecond Laser
Authors:
Masahiro Tsukmoto, Joining and Welding Research Institute, Osaka Univversity; Ibaraki Japan
Nobuyuki Abe, Joining and Welding Research Institute, Osaka Univversity; Ibaraki Japan
Yuichi Komizo, Joining and Welding Research Institute, Osaka Univversity; Ibaraki Japan
Keita Asuka, Graduate School of Engineering, Osaka University; Suita Japan
Masayuki Fujita, Institute for Laser Technology; Suita Japan
Masaki Hashida, Institute for Chemical Research, Kyoto University; Uji Japan
Hitoshi Nakano, School of Engineering, Kinki University; Higashi-Osaka Japan
Masahito Katto, Cooperative Research Center, Miyazaki University; Miyazaki Japan
Presented at ICALEO 2006

Microstructures formation on titanium (Ti) plate by femtosecond laser ablation was reported. Laser fluence was varied from 0.5 to 2.0 J/cm2 with the period of 0.5 J/cm2. The number of laser pulses was changed from 10 to 500 pulses at each laser fluence. In the center region of the laser ablation area, periodic nanostructures and microstructures were formed except for the laser fluence of 2.0 J/cm2. The crystal structure of the plate irradiated with the laser at 2.0 J/cm2 was evaluated using the transmission electron microscope (TEM). The analysis indicated that the phase of the Ti was change from to in the region.