Research On 3d Laser Physical-Chemical Modification Technology Of Metal Complex

The traditional laser modification technology quenched and roughened the surface by its high power density, rapid heating, rapid cooling and other physical characteristics. But little research has been done in the chemical reaction and the interaction of physical and chemical reactions in the laser processing.The ability of electron transmission in laser irradiated surface of metal complex, which has the huge potential in the material modification. The UV laser metal complex modification has been reported in foreign papers. But the principle or experiment by other wavelength laser has never been reported.A comparative study on laser physical and chemical modification of metal complex by visible wavelength (532nm), NIR wavelength (1064nm) and MIR wavelength (10600nm) is researched in this paper. Irradiated by a focused laser beam, the surface reducibility and adsorbability of copper-chromium complex are improved through photo-fragmentation and laser texturing. And the irradiated area could be chemically plated on copper and nickel. In this way, the quality of metal and nonmetal coexist on the surface of the same material. The basic research or application in this filed has the creativities and multidisciplinary characteristics.Based on the diatomic molecular anharmonic oscillator mode, the electronic configuration and molecular structure of metal complex are effected when irradiated by different wavelengths. Compared with three different wavelengths samples, the reduced metal percent is distinguished at the depth from nanometer to micron by XPS and EDX. Analyzed by the binding energy spectrum and the auger spectrum, the valence state of chromium ion and copper ion are +3 and +1 after radiation, which still has the reducibility to release electrons. The 1064nm sample is the most satisfactory after electroless plating, which is measured by XRF. The improvement in the surface texturing, observed by ESEM, is also the same.Through the comparative experiments and 3D scanning analysis, the DPL Nd:YAG is selected to be the laser source, which is assembled to the 3D scanning system with a Q-switch, a small aperture, a dynamic focusing lens, X Y scanning mirrors and an f-theta lens. The auto seamless combination has been done by the tri-axial servo rotating system. Based on the PCI bus and DSP, an auto 3D scanning software is developed with the function of auto optimization path, curved surface hatching and polyhedron rotating combination.The laser modified effect by different modulation frequency is analyzed in this system. And the optimum parameter is determined through the contrast experiments. Based on it, a satisfied RF capability of a laser modified cell phone antenna is obtained. The improvements are pointed out at the end of the paper.