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ID:46632257
大小:3.07 MB
页数:6页
时间:2019-11-26
《基于柠檬酸金钾的电镀金工艺研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第46卷第5期2014年10月南京航空航天大学学报JournalofNanjingUniversityofAeronautics8LAstronautics基于柠檬酸金钾的电镀金工艺研究李寒松张刚雷胡孝昀(南京航空航天大学机电学院,南京,210006)V01.46No.50ct.2014摘要:针对现有的有氰镀金体系镀液含有有毒的氰化物,废液污染环境、处理困难等问题,提出低危害电镀金工艺实验研究。为了极大减少溶液在实验过程中电离出游离态氰离子,选择柠檬酸金钾作为电镀金溶液配方主盐。在既定的溶液配方基础上,改变电场、流场、冲液方式、阴阳极间距等参数,优化实验工艺,在紫铜基体上
2、进行基础实验,得到结晶晶粒细致,与基底结合力高,表面光亮度好的电镀层。采用原子力量微镜(Atomicforcemicroscope,AFM)测试了基体和镀层的微观形貌,镀金层有效复制,基体表面的粗糙度降低。应用扫描电子量微镜(Scanningelectionmircroscope,SEM)分析了镀层的组成成份,并用W孓97涂层附着力划痕试验仪检测了镀层的结合力,其性能满足行业标准的要求。关键词:微细制造;电镀金;柠檬酸金钾;结合力;光亮度中图分类号:TQl53.1文献标志码:A文章编号:1005-2615(2014)05一0757一06StudyofGoldElectri
3、calPlatingProcessBasedonGoldPotassiumCitrateLiHansong,ZhangGanglei,HuXiaoyun(CollegeofMechanicalandElectricalEngineering,NanjingUniversityofAeronautics&Astronautics,Nanjing,210006,China)Abstract:Anexperimentalstudyonlowhazardelectricplatingprocessisconducted,inviewofthedisad—vantagesofthe
4、existingsystemforcyanideplating,whichincludecontainingtoxiccyanideoftheplatingsolution,theenvironmentpollution,difficultiesindisposingandSOon.Thegoldpotassiumcitrateisusedasthemainsaltinthesolutionforgoldelectricalplating,toreducethefree—statecyanideionsion—izedfromthesolutionintheexperim
5、entalprocess.Basedontheestablishedsolution,experimentsarecarriedoutonthecoppersubstrate.Influencesoftheelectricfield,flowfield,thestyleoftheflushandthedistancebetweenanodeandcathodeontheplatingperformancearestudiedexperimentally.Withtheoptimizedparameters,ratherbrightsurfaceswithsmallercr
6、ystallinegrainsizeandhigherbondingstrengthareobtained.Themicrostructureofthesurfaceandthesubstratearetestedbyatomicforcemi—croscope(AFM),demonstratingthatthegold—platedlayeriseffectivelycopiedandeventheroughnessofthesubstratesurfaceisreduced.Furthermore,thecompositionoftheplatingistestedu
7、singscanninge—lectionmircrosoope(SEM)andtheplatingadhesionistestedbytheWS-97coatingadhesiontestingin—strument,whichindicatesthattheplatingperformancesmeettheindustrystandard.Keywords:micromanufacturing;goldelectricalplating;goldpotassiumcitrate;bindingforce;luminanc
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