添加稀土元素对精密电铸层组织与性能的影响

基金项目:

江苏省高校自然科学研究计划资助项目(04KJB460032)

中国博士后科学基金资助项目(2004035663)

详细信息

Effects of Rare Earth Added to Sulfamate Solution on the Microstructure and Properties of Electroformed Layers

摘要: 将稀土LaCl3作为添加剂,进行精密电铸试验,研究了稀土阳离子对铸液特性、铸层微观结构及其性能的影响,分析了稀土阳离子在阴极沉积表面的作用机理.结果表明:稀土阳离子在沉积表面能产生特性吸附,具有增强阴极极化、提高沉积过电位和细化铸层晶粒的作用;沉积过程中晶粒在(111)晶面方向上存在明显的择尤生长取向;铸层的显微硬度得到显著提高.
- 电铸层 /
- 稀土LaCl3 /
- 极化曲线 /
- 显微硬度
Abstract: The effects of rare earth LaCl3 added to the basic sulfamate solution on electrolyte characteristic and microstructure and properties of electroformed nickel layers were studied .The action mechanism of LaCl3 on the surface of cathodic electrode was discussed.It has been found that the cathodic polarization of the electrodepositing process is increased due to occurring of LaCl3 special adsorption on electrode surface,which could result in crystal refining of electroformed layers.Moreover,the crystal orientation has strong (111) texture,and the micro-hardness could be improved substantially with the addition of LaCl3.
- electroformed layer /
- rare earth LaCl3 /
- polarization curve /
- micro-hardness

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