| 引用本文: | 强军,蒋炳炎,董彦灼,翁灿.钴含量对电铸镍钴合金模芯微纳结构复制质量的影响[J].中国表面工程,2018,31(5):118~124 |
| QIANG Jun,JIANG Bingyan,DONG Yanzhuo,WENG Can.Effects of Cobalt Content on Replication Quality for Micro/nano-structural Morphology of Electroformed Nickel Cobalt Alloy Mold Insert[J].China Surface Engineering,2018,31(5):118~124 |
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| 摘要: |
| 为探明电铸液中钴含量对仿荷叶表面镍钴合金模芯微纳结构复制质量的影响，采用阴极竖直旋转的微电铸技术，制备不同钴含量的仿荷叶表面镍钴合金模芯，采用扫描电子显微镜（SEM）、能谱仪（EDS）分析仿荷叶表面镍钴合金模芯表面的复制质量及成分。结果表明：由于铸层表面内应力的影响，在常规镍电铸中添加钴以后，仿荷叶镍钴合金模芯表面出现了波纹型的褶皱；观测模芯微观形貌发现其表面微米级的孔洞沿特定方向出现不同程度的拉伸，随着电铸液中钴含量（体积分数）的增加，拉伸程度先增加后降低（拉伸程度：钴含量0 g/L<钴含量40 g/L<钴含量10~30 g/L）；铸层中添加元素钴有利于晶粒细化，随电铸液中钴含量的增加，模芯表面微纳结构越细小，复制质量越高。 |
| 关键词: 仿荷叶表面 镍钴合金 电铸 复制质量 微观形貌 |
| DOI：10.11933/j.issn.1007-9289.20180402003 |
| 分类号:O647.5;TQ153.4 |
| 基金项目:国家自然科学基金（51775562，91123012） |
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| Effects of Cobalt Content on Replication Quality for Micro/nano-structural Morphology of Electroformed Nickel Cobalt Alloy Mold Insert |
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QIANG Jun, JIANG Bingyan, DONG Yanzhuo, WENG Can
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College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
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| Abstract: |
| To study the influence of cobalt additions on the replication quality about micro/nano-structures of lotus-leaf-like nickel-cobalt alloy insert, the vertical rotating cathode micro electroforming technology was used to manufacture various inserts. Scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) were used to analyze the replication quality and composition. Results show that the influence of the internal stress on the electroforming surface causes the corrugation on the surface of lotus-leaf-like nickel-cobalt alloy insert after adding some cobalt in the normal electroforming. Additionally, the microstructure of the insert is affected by tensile stress according to the analysis of the microcosmic morphology of the insert, and the micro-level holes are stretched in a specific direction of different degrees. With the increase of the cobalt content in electrolyte, the level of stretch tends to increase and then decrease (level of stretch:cobalt addition 0 g/L < cobalt addition 40 g/L < cobalt addition 10-30 g/L). Moreover, the addition of cobalt in the electroforming layer is propitious to grain refinement. Meanwhile, the replication quality becomes higher and nanostructures of the insert surface become smaller with the addition of the cobalt in electrolyte. |
| Key words: lotus-leaf-like Ni-Co alloy electroforming replication quality micromorphology |
