Effects of gravity on the electrodeposition and characterization of nickel foils |
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Authors: | Ting Liu Zhan-cheng Guo Zhi Wang Ming-yong Wang |
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Affiliation: | 1. State Key Lab of Mulfiphase Complex System,Institute of Process Engineering,Chinese Academy of Soiences,Beijing 100190,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China 2. State Key Lab of Mulfiphase Complex System,Institute of Process Engineering,Chinese Academy of Soiences,Beijing 100190,China;Key Laboratory of the Ministry of Education of China for Ecological and Recycle Metallurgy,University of Science and Technology Beijing,Beijing100083,China 3. State Key Lab of Mulfiphase Complex System,Institute of Process Engineering,Chinese Academy of Soiences,Beijing 100190,China |
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Abstract: | The effects of gravity on nickel electrodeposifion,the morphology and mechanical properties of deposits were studied in a super gravity field.Predictions in a microgravity field were also presented based on the obtained experimental tendency.Linear sweep voltamrnetry reveals that the nickel electrodeposition process is enhanced by increasing the gravity coefficient (G).The limiting current density changes from 10.2 to 293.0 mA.cm-2 with the increase of the G value from 10-4 to 354.The morphology of deposits was analyzed by scanning electron microscopy (SEM)and atomic force microscopy (AFM).The images show that the morphology deposited in the super gravity field has freer grain sizes and denser and smoother surfaces,The roughness reduces from 48.3 to 4.9 nm with the increase of the G value from 10-4 to 354.Meanwhile,mechanical tests indicate that the mechanical properties of nickel foils are greatly improved due to introducing a super gravity field during electrodeposition. |
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Keywords: | metal foil nickel gravity microgravity electrodeposition mechanical properties |
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