环球电镀网
当前位置: 首页 » 电镀技术 » 研究报告 » 正文

氟硼酸盐体系电沉积因瓦合金箔的工艺研究

放大字体  缩小字体发布日期:2012-04-11  浏览次数:630

摘要:在含有0.75 mol/L Ni(BF4)2·6H20,0.05~0.25 mol/L Fe(BF4)2,0.5 mol/L H3803,30g/L NaBF4和0.5g/L糖精的镀液中,以316L不锈钢作为旋转阴极,电沉积制备了因瓦合金箔。讨论了镀液中亚铁离子含量、阴极旋转速率、温度、pH、电流密度等5个因素对合金箔中铁含量及阴极电流效率的影响,确定了最佳工艺条件为:Fe2+浓度0.15 mol/L,温度45~55℃, pH 2.5~3.0,电流密度18~25 A/dm2,阴极旋转速率600~900 r/min。所得合金箔光亮致密,柔韧性好,其Fe含量稳定在62%~66%,达到了因瓦合金的组分要求。

关键词:铁镍合金;因瓦合金;箔;氟硼酸盐;电沉积;旋转阴极:电流效率

中图分类号:TQl53.2    文献标志码:A

文章编号:1004—227X(2009)02—0004—04

Study on electrodeposition process of invar ahoy foil in a fluoroborate electrolyte//WANG Er.1i.SU Chan9. wei。ZHANG Yu.bin,HE Fen9.iiao*

Abstract:Invar alloys were prepared by electrodeposition with 3 1 6L stainless steel as rotating cathode in a bath containing 0.75 mol/L Ni(BF4) 2·6H20,0.05-0.25 mol/L Fe(BF4)2,0.5 mol/L H3B0330g/L NaBF4 and 0.5g/L saccharine.The effects of ferrous ion concentration,cathode rotating rate, temperature,pH and current density on the iron content of alloy foil and cathodic current emciency were discussed.The optimal process conditions were determined as follows:Fe2+0.1 5 mol/L。temperature 45.55 ℃。pH 2.5—3.0,current density1 8.25 A/dm2 and cathode rotating rate 600.900 r/min.The electrodeposited alloy foils feature brightness,compactness, good toughness.and stable iron content between 62%and66%,meeting the composition requirement of invar alloy.

Keywords:iron-nickel alloy;invar alloy;foil;fluoroborate; electrodeposition;rotating cathode;current emciency

First-author’S address:College of Chemistry&Chemical Engineerin9,Hunan University,Changsha 4 1 0082,China

 

1         前言

 

因瓦合金是指铁质量分数为64%的铁镍合金,其最主要的特点是在较宽的温度范围内具有非常低的热膨胀系数,能够保持元器件形状、尺寸的稳定,因而被广泛应用于精密仪器领域[1-5]。因瓦合金箔的制备方法有很多,如真空蒸镀、机械延压、熔炼铸造等。与上述方法相比,电沉积法制备因瓦合金操作简单,成本低廉,能<

注:本站部分资料需要安装PDF阅读器才能查看,如果你不能浏览文章全文,请检查你是否已安装PDF阅读器!

网站首页 | 网站地图 | 友情链接 | 网站留言 | RSS订阅 | 豫ICP备16003905号-2
knee length prom dresses ralph lauren polo shirts for cheap swiss replica rolex long sleeve evening dresses replicas rolex