Diffusion-elastic phenomena in nickel and cobalt electrodeposits plated on to strip cathodes |
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| Affiliation: | 1. Laboratory of Materials, Electrochemistry and Environment, Faculty of Science, Ibn Tofail University, PB 133-14050 Kénitra, Morocco;2. Centre Régional des Métiers de l''Education et de la Formation (CRMEF), Avenue Allal Al, Fassi, Madinat Al Irfane, BP 6210-10000, Rabat, Morocco;1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, China;2. Institute of Materials for Energy and Environment, State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, College of Materials Science and Engineering, Qingdao University, China |
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| Abstract: | A quantitative analysis was made of the post-deposition increase of the internal tensile stress in nickel and cobalt electrodeposits using an approach based on the diffusion-elastic phenomena. Equations were derived for the determination of the amount and the effective diffusion coefficient of hydrogen, which leaves the deposit immediately after plating. The experimental results are processed using these equations and the results are compared with data in the literature. The role played by hydrogen desorption in increasing the tensile stress after the electrodeposition current is switched off was confirmed. |
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