The analysis of metal deposition and micro-crystallites deposited byusing CO2 laser from aqueous solution
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摘要: 为了研究低功率CO2激光诱导条件下,从水性溶液中诱导金属沉积机理,利用动态力显微镜分析了金属Ag过程中的晶粒分布以及晶体生长概貌;利用电子探针研究了金属沉积层在环氧树脂表面的横向和纵向沉积现象;利用X射线衍射方法研究了Ag-Cu沉积层中的Cu晶体生长过程中晶格常数的变化。结果表明,Ag晶粒在基材表面的沉积规律、生长分布与工艺参量以及激光模式有密切关系;金属微粒在环氧树脂表面的横向沉积,直接影响金属层的宽度,而其纵向沉积直接决定金属层的厚度;同Cu相比,Ag-Cu层也在(111),(200),(220)3个晶面衍射强度较大,但点阵常数α有微小变化,说明在沉积过程中有少量的杂质原子渗透到Cu金属层。Abstract: 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.
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