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dc.contributor.author유봉영-
dc.date.accessioned2018-02-05T05:12:35Z-
dc.date.available2018-02-05T05:12:35Z-
dc.date.issued2015-01-20-
dc.identifier.citationELECTROCHIMICA ACTA, v. 153, Page. 225-231en_US
dc.identifier.issn0013-4686-
dc.identifier.issn1873-3859-
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0013468614024207-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/35403-
dc.description.abstractNickel-tungsten (Ni-W) alloys with tailored composition were electrodeposited by controlling the pH of electrolytes and the applied current density. The current efficiency for the electrodeposition of Ni-W alloys was dependent on the pH of the employed electrolytes. The surface morphology and crystallinity of the electrodeposited Ni-W with controlled compositions were characterized. Based on the electrochemical studies of Ni-Walloys, Ni-Wthin films with alternate W-rich and W-poor multilayers were produced by applying alternate current densities. The number and dimensions of the deposited layers were well controlled by the programmed frequency of the applied current and period time, respectively, in the electrochemical cell. In addition, the mechanical properties, such as hardness and internal stress of the Ni-W electrodeposits, were investigated as a function of the composition and number of deposited layers. Compared to the single layer Ni-W films showing the increase of cracks and interal stress with increasing the hardness, the modulated Ni-W multilayers without surface cracks demonstrated the enhanced hardness without an increase in the internal stress. (C) 2014 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipThis work was supported by the Strategic Core Materials Technology Development Program (No.10043799), a New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning(KETEP) grant (No.20123010010160), and the Human Resources Development program (No.20124030200130) funded by the Ministry of Trade, Industry and Energy (MTIE, Korea).en_US
dc.language.isoen_USen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.subjectNi-W alloyen_US
dc.subjectmultilayeren_US
dc.subjectelectrodepositionen_US
dc.subjecthardnessen_US
dc.subjectinternal stressen_US
dc.subjectNANOCRYSTALLINE NICKELen_US
dc.subjectGRAIN-SIZEen_US
dc.subjectALLOYSen_US
dc.subjectCOATINGSen_US
dc.subjectTUNGSTENen_US
dc.subjectWEARen_US
dc.subjectCOBALTen_US
dc.subjectIRONen_US
dc.subjectTEMPERATUREen_US
dc.subjectBEHAVIORen_US
dc.titleMechanical Properties of Electrodeposited Ni-W ThinFilms with Alternate W-Rich and W-Poor Multilayersen_US
dc.typeArticleen_US
dc.relation.volume153-
dc.identifier.doi10.1016/j.electacta.2014.11.190-
dc.relation.page225-231-
dc.relation.journalELECTROCHIMICA ACTA-
dc.contributor.googleauthorLee, Sanghyeon-
dc.contributor.googleauthorChoi, Minyoung-
dc.contributor.googleauthorPark, Subeen-
dc.contributor.googleauthorJung, Hyunsung-
dc.contributor.googleauthorYoo, Bongyoung-
dc.relation.code2015000413-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING-
dc.identifier.pidbyyoo-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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