中南大学学报（自然科学版）2017，Vol.48Issue(7)：1719-1725,7.DOI:10.11817/j.issn.1672-7207.2017.07.005
多硫化钠法表征纯铜带表面清洁度
Characterization of pure copper strip surface cleanliness by sodium polysulfide method
摘要
Abstract
By the reaction of sodium polysulfide (Na2Sx) solution and pure copper strip,the morphology,phase and chemical composition of the reaction surface layer were characterized by optical microscopy (OM),scanning electron microscopy (SEM),X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).The influence of sulfur index (x) and reaction time on surface morphology was investigated.The feasibility of sodium polysulfide method characterizing surface cleanliness of pure copper strip was also discussed.The results show that after reacting with sodium polysulfide,the surface layer of pure copper strip is mainly composed of black or dark gray Cu2S composition of the precipitate layer,and the shape of Cu2S doesn't change with time,maintaining uniform and smooth granular.With sulfur index increasing and reaction time extended,the change regularity of the surface morphology is consistent.Cu2S precipitate layer is gradually thickened,Cu2S small particles aggregation causes the formation of short rods,or large particles,then precipitate layer cracks,crack spreads and finally falls off.The sodium polysulfide method can be used for the quantitative characterization of pure copper strip surface cleanliness,the black area of the reaction pure copper strip surface accounted for the percentage of the whole pure copper strip surface area is the surface cleanliness of the pure copper strip.关键词
多硫化钠/纯铜带/表面形貌/表面清洁度Key words
sodium sulfide/pure copper strip/surface morphology/surface cleanliness分类
矿业与冶金引用本文复制引用
彭展南,刘雪峰,林冠群..多硫化钠法表征纯铜带表面清洁度[J].中南大学学报（自然科学版）,2017,48(7):1719-1725,7.基金项目
国家重点基础研究发展计划(973计划)项目(2016YFB0301301) （973计划）
新金属材料国家重点实验室自主研究项目(2014Z-05)(Project(2016YFB0301301) supported by the National Key Research and Development Program (973 Program) of China （2014Z-05）
Project(2014Z-05)supported by the State Key Laboratory for Advanced Metals and Materials) （2014Z-05）
