光亮微晶态镍铁合金箔电沉积

来源期刊:中南大学学报(自然科学版)2005年第6期

论文作者:杨余芳 龚竹青 阳征会 罗北平 马玉天

文章页码:977 - 982

关键词:镍铁;合金箔;电沉积;纳米;微晶态;添加剂

Key words:nickel-iron; alloy foi;l electrodeposition; nanometer; minicrysta;l additive

摘    要:在氯化物-硫酸盐体系中,采用电沉积的方法制得了光亮Ni-Fe二元合金箔。研究了Ni2+与Fe2+的摩尔比(n(Ni2+) /n(Fe2+))及Cl-、硼酸、柠檬酸、糖精和十二烷基硫酸钠对电沉积Ni-Fe合金箔的铁含量和电流效率的影响规律。当电流密度为10~13 A/dm2, pH值为3. 17,温度为50~55℃,时间为10 min时,得到了Fe含量(质量分数)为23. 2% ~63. 0%, Ni含量为37. 0% ~76. 8%,厚度为30μm左右的纳米微晶态Ni-Fe合金箔镀层。X射线衍射结果表明:合金箔为NiFe固溶体织构,晶粒细化,属于纳米微晶体;合金箔表面光亮平滑;显微硬度(HR30T)为17. 2~19. 5,抗拉强度为779. 66MPa,延伸率为1%,电阻率为29. 56~62. 99μΩ·cm,其具有较强的韧性和耐腐蚀性能。

Abstract: the brightnickel iron binary alloy foilwas synthesized successfully by means ofelectrode position in the system of chloride-sulfate. The influences ofn(Ni2+) /n(Fe2+), Cl-ion, boric acid, citric acid, saccharin and sodium lauryl sulfate on Fe contentof the plating nickel iron alloy foilwith the current efficiencywere investigated. When currentdensitywas10-13A/dm2, pH valuewas3.17, temperaturewas 50-55℃and plating timewas10min, nanominicrystalnickel iron alloy foilswere obtained with the thickness of about30μm and iron, nickel contents of23. 2%-63. 0% and 37. 0%-76. 8% (mass fraction), respectively. TheX-ray diffraction result indicates that theNi-Fe alloy foil represents a strongly textured solid solution ofFe inN.i The crystal grain of the alloy foil is fine and belongs to nano minicrysta,l and the surface is bright and smooth. The hardness (HR30T) ofNi-Fe alloy foil is 17. 2-19. 5. The tensile strength is779. 66MPawhile the extensibility is1%, and the resistivity is from 29. 56 to 62. 99μΩ·cm. TheNi-Fe alloy foilhas good toughness and corrosion resistance.

基金信息:国家自然科学基金资助项目

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