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电镀的基本原理
文章出处:http://kimsworld1.com/  网责任编辑:admin 人气:179  发表时间:2014-11-28

       电镀是一种电化学过程,也是一种氧化还原过程.电镀的基本过程是将零件浸在金属盐的溶液中作为阴极,金属板作为阳极,接上海11选5后,在零件上沉积出所需的镀层。

  
上海11选5   例如:镀镍时,阴极为待镀零件,阳极为纯镍板,在阴阳极分别发生如下反应:

  YINJI(DUJIAN):Ni2++2e→Ni (ZHUFANYING)

上海11选5   2H++e→H2↑ (FUFANYING)

  YANGJI(NIEBAN):Ni -2e→Ni2+ (ZHUFANYING)

  4OH--4e→2H2O+O2+4e (FUFANYING)

上海11选5   BUSHISUOYOUDEJINSHULIZIDOUNENGCONGSHUIRONGYEZHONGCHENJICHULAI,RUGUOYINJISHANGQINGLIZIHAIYUANWEIQINGDEFUFANYINGZHANZHUYAODIWEI,ZEJINSHULIZINANYIZAIYINJISHANGXICHU.GENJUSHIYAN,JINSHULIZIZISHUIRONGYEZHONGDIANCHENJIDEKENENGXING,KECONGYUANSUZHOUQIBIAOZHONGDEDAOYIDINGDEGUILV,RUBIAO1.1SUOSHI。

  YANGJIFENWEIKERONGXINGYANGJIHEBURONGXINGYANGJI,DADUOSHUYANGJIWEIYUDUCENGXIANGDUIYINGDEKERONGXINGYANGJI,RU:DUXINWEIXINYANGJI,DUYINWEIYINYANGJI,DUXI-QIANHEJINSHIYONGXI-QIANHEJINYANGJI.DANSHISHAOSHUYOUYUYANGJIRONGJIEKUNNAN,SHIYONGBURONGXINGYANGJI,RUSUANXINGDUJINSHIYONGDESHIDUOWEIBOHUOTAIYANGJI.DUYEZHUYANLIZIKAOTIANJIAPEIZHIHAODEBIAOZHUNHANJINRONGYELAIBUCHONG.DUGEYANGJISHIYONGCHUNQIAN,QIAN-XIHEJIN,QIAN-TIHEJINDENGBURONGXINGYANGJI。