摘要
建立了纳米级石墨化学镀铜的均匀性表征方法,为提高石墨镀铜颗粒的导电性和润滑性提供数据参考。采用化学镀铜的方法对石墨颗粒进行镀铜处理,并用XRD和TEM对纳米级石墨镀铜的结构和形貌进行了表征;通过对石墨化学纳米镀层TEM图像的分析,给出了一种适合于纳米级石墨镀铜TEM的二值化方法,结合数学形态学,定位出铜颗粒。提出了一种结合颗粒面积比和颗粒数量分布的均匀性表征方法。对不同纳米级石墨镀铜TEM图像进行了铜颗粒定位和均匀性分析。结果表明,铜颗粒定位准确,均匀性表征方法有效。同时,验证了对于纳米级石墨镀铜材料,石墨的颗粒越小,石墨镀铜中铜颗粒的分布越均匀。
In order to improve the conductivity and lubricity of the copper-coated graphite particles, the quantitative characterization method was established to represent the uniformity of nano copper-coated graphite particles, the chemical copper plating method was used in the Cu planting process. The structure and morphology of nano copper-coated graphite were analyzed by X-ray diffraction （XRD） and transmission electron microscopy （TEM）, respectively. A kind of binarization method based on the TEM images was presented, and when it＇s integrated with mathematical morphology, the Cu particles can be located. What＇s more, a uniformed characterization method based on the combination of particle size and particle number distribution ratio was proposed. Copper particles orientation and analysis of uniformity were taken for the TEM images of copper-coated graphite particles with different nanostructures. It shows that the 40 nrn copper-coated graphite has better uniformity than the 50 nm ones, which means that the size of copper coated graphite is related to the size of graphite particles,and smaller graphite particles lead to better coating effect.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第1期48-52,共5页
Journal of Wuhan University of Technology
关键词
纳米级镀铜石墨
图像处理
颗粒面积比
均匀性
nano copper-coated graphke
digital image processing
particle area ratio
uniformity
