研究了紫铜基体上采用高频(20～140 kHz)脉冲电流获得的Ni-Co合金镀层在w=10%的NaOH溶液中的耐蚀性.采用扫描电镜观察了碱蚀前后Ni-Co合金镀层的表面形貌,并测定了镀层在w=10%的NaOH溶液中的阳极极化曲线.结果表明,脉冲条件下所得的镀层致密,均匀,呈胞状生长,对w=10%的NaOH溶液有较强的耐蚀性.采用X射线衍射,分析了Ni-Co合金镀层的微观结构.当镀层中钴含量较低时,合金由面心立方结构的固溶体组成.随着脉冲频率的升高,Ni-Co合金镀层中的Co含量不断增加,其耐蚀性则不断降低.
参考文献
| [1] | 李大佛;李天明;陈洪俊.中国电镀金刚石钻头的研究和应用[J].探矿工程-岩土钻掘工程,1996(04):41-43. |
| [2] | N. V. Myung;K. Nobe .Electrodeposited Iron Group Thin-Film Alloys Structure-Property Relationships[J].Journal of the Electrochemical Society,2001(3):C136-C144. |
| [3] | D.Golodnitsky;N.V.Gudin .Study of Nickel-Cobalt Alloy Electrodeposition from a Sulfamate Electrolyte with Different Anion Additives[J].Journal of the Electrochemical Society,2000(11):4156-4163. |
| [4] | WANG J Y;BALAMURAGAN D;CHIN D-T .An experimental study of mass transfer in pulse reversal plating[J].Journal of Applied Electrochemistry,1992,22(03):240-246. |
| [5] | Tang PT.;Andersen JET.;Bechnielsen G.;Watanabe T. .IMPROVED CORROSION RESISTANCE OF PULSE PLATED NICKEL THROUGH CRYSTALLISATION CONTROL[J].Journal of Applied Electrochemistry,1995(4):347-352. |
| [6] | 徐红娣;李光萃.常用电镀溶液的分析[M].北京:机械工业出版社,1993:146-147. |
| [7] | 乔桂英,荆天辅,王艳,高聿为,肖福仁.喷射电沉积块体纳米晶Co-Ni合金工艺的研究[J].电镀与环保,2003(02):5-8. |
| [8] | S. K. Ghosh;A. K. Grover;G. K. Dey;M. K. Totlani .Nanocrystalline Ni-Cu alloy plating by pulse electrolysis[J].Surface & Coatings Technology,2000(1):48-63. |
| [9] | Tury B;Lakatos-Varsanyi M;Roy S .Ni-Co alloys plated by pulse currents[J].Surface & Coatings Technology,2006(24):6713-6717. |
| [10] | Srivastava M;Selvi VE;Grips VKW;Rajam KS .Corrosion resistance and microstructure of electrodeposited nickel-cobalt alloy coatings[J].Surface & Coatings Technology,2006(6):3051-3060. |
| [11] | 杨德钧;沈卓身.金属腐蚀学[M].北京:冶金工业出版社,1999:80-82. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%