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Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678

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Fabrication and Enhanced Vickers Hardness of Electrodeposited Co–Cu Alloy Film with High Composition Gradient
Hiroyuki HagiwaraYoshihisa KanekoMakoto Uchida
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論文ID: MT-M2019334

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By applying an oscillating potential wave, we obtained an electrodeposited Co–Cu alloy film in which the Co concentration changed periodically at a short modulation wave length. A triangular Co concentration modulation was observed along the film growth direction. The local composition gradient became as high as 50 at%/µm. The Vickers hardness of the composition gradient film was 380 HV. Because this value was much higher than that of simple electrodeposited Co–Cu alloy films, contribution of the composition-gradient structure to hardness was suggested.

Vickers hardness values of the electrodeposited copper, cobalt, Co/Cu multilayer, simple Co–Cu alloys, and composition-gradient Co–Cu alloy films. Fullsize Image
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