| It is a new processing technology to realize the transfer of micro substance by the induction of laser. Femtosecond laser has characteristics of short pulse width, high peak power. Processing material mechanism is different from the ordinary long pulse laser. This paper choose femtosecond laser as processing light source. The Si C thin film and Ni Co Gr Al-Y2O3 film are deposited on the surface of the titanium alloy substrate by femtosecond laser induced prior to transfer technology. The film transfer regulars are studied under the different experimental parameters. The Si C coating is prepared on the surface of titanium alloy by the appropriate parameters. The transfer coating is analyzed. The main research contents are as follows:The Ni Co Gr Al-Y2O3 target of satisfying the EB-PVD experimental standard is prepared. The Si C thin films and Ni Co Gr Al-Y2O3 thin films with different thickness are prepared by electron beam evaporation coating system. The films are phase analysis.The test results show that crystalline structure of the material is changed from crystalline to amorphous shifting in the process of electron beam evaporation plating.The Ni Co Gr Al-Y2O3 film and Si C thin film are transferred by femtosecond laser induced. The scanning speed, femtosecond laser power, focal distance, the thickness of the thin film factors to the transfer of thin film deposition are summarized in this experiment. The results showed that: In order to ensure that the deposited film has good lap rate, there are certain requirements on the scanning speed at sufficiently high laser power and certain conditions.The deposition of thin film line width will increase by changing the defocus way, While improving the film deposition rate can be increased overlapping width of the deposited film, thereby improving the processing efficiency; Laser power have a more suitable scope, When the range of laser power is small, deposition film line width is smaller and can’t even shift deposits. When the laser power is larger, the basal material will be ablation with the film transferring.Femtosecond laser has a precise ablation threshold.The first use of the femtosecond laser experiment successfully transferred Si C film deposition. The Si C coating is prepared in the surface of titanium alloy. The experiments show have shown that: the organization of coating does not appear crack;there is a degree of crystallization in the process of Si C thin film transfer; the Si C coating and titanium alloy substrate have formed a tight binding. |
