The analysis of metal deposition and micro-crystallites deposited byusing CO2 laser from aqueous solution

In order to study the mechanism of metal deposition from aqueous solution induced by low power CO2 laser irradiation,dynamic force microscope(DFM) was used to analyze the crystallite distribution and it's growth of Ag deposition.Electronic probe micro-analysis(EPMA) was adopted to analyze the metal deposition on the epoxy surface along the transverse and longitude directions,and X-ray diffraction(XRD) was used to analyze the crystal growth of Ag-Cu deposited by electroless-plating.Ag crystallites distribution and its growth varied with the technical parameters.The transverse deposition on the epoxy surface defined the width of metal deposition and the longitude deposition defined its thickness.Although the crystal lattice parameters of Cu deposited on Ag by electroless-plating changed little,the crystallites grew in direction of (111),(200) and (220) of crystal,because the impurity atom penetrated in the Cu layer in the deposition process.