Industrial applications of laser-material interactions for coating formation

Abstract

Laser Synthesis of TiN coatings on top of Ti pieces is performed by means of a free electron laser and also conventional lasers in reactive atmospheres. The produced coatings were investigated by various techniques. The results and properties of the resulting coatings are presented and discussed in connection with the different laser specialties. For the free electron laser treatment it was found that its ability to tune the pulse timing can be used to tailor the coating structure and properties (phases, hardness, strain, grain-size, etc.). This is discussed in connection with results of modeling the temperature, the plasma evolution, the mass transport, and the solidification behavior during and after the laser irradiation.