Design and Development of High-Entropy Alloys with a Tailored Composition and Phase Structure Based on Thermodynamic Parameters and Film Thickness Using a Novel Combinatorial Target
DC Field | Value | Language |
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dc.contributor.author | Alam, Khurshed | - |
dc.contributor.author | Jang, Woohyung | - |
dc.contributor.author | Jeong, Geonwoo | - |
dc.contributor.author | Park, Chul-Kyu | - |
dc.contributor.author | Lee, Kwangmin | - |
dc.contributor.author | Cho, Hoonsung | - |
dc.date.accessioned | 2023-08-21T05:40:13Z | - |
dc.date.available | 2023-08-21T05:40:13Z | - |
dc.date.issued | 2023-07 | - |
dc.identifier.issn | 2470-1343 | - |
dc.identifier.issn | 2470-1343 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88812 | - |
dc.description.abstract | This study presents a novel synthesis route for high-entropyalloys(HEAs) and high-entropy metallic glass (HEMG) using radio frequency(RF) magnetron sputtering and controlling the HEA phase selectionaccording to atomic size difference (& delta;) and film thickness.The preparation of HEAs using sputtering requires either multitargetsor the preparation of a target containing at least five distinct elements.In developing HEA-preparation techniques, the emergence of a novelsputtering target system is promising to prepare a wide range of HEAs.A new HEA-preparation technique is developed to avoid multitargetsand configure the target elements with the required components ina single target system. Because of a customizable target facility,initially, a TiZrNbMoTaCr target emerged with an amorphous phase owingto a high & delta; value of 7.6, which was followed by a solid solution(SS) by lowering the & delta; value to 5 (& LE;6.6). Thus, thissystem was tested for the first time to prepare TiZrNbMoTa HEA andTiZrNbMoTa HEMG via RF magnetron sputtering. Both films were analyzedusing X-ray diffraction (XRD), X-ray photoelectron spectroscopy, fieldemission scanning electron microscopy cross-sectional thickness, andatomic force microscopy (AFM). Furthermore, HEMG showed higher hardness10.3 (& PLUSMN;0.17) GPa, modulus 186 (& PLUSMN;7) GPa, elastic deformation(0.055) and plastic deformation (0.032 GPa), smooth surface, lowercorrosion current density (I (corr)), androbust cell viability compared to CP-Ti and HEA. XRD analysis of thefilm showed SS with a body-centered cubic (BCC) structure with (110)as the preferred orientation. The valence electron concentration [VEC= 4.8 (<6.87)] also confirmed the BCC structure. Furthermore, themorphology of the thin film was analyzed through AFM, revealing asmooth surface for HEMG. Inclusively, the concept of configurationalentropy (& UDelta;S (mix)) is applied and thecrystalline phase is achieved at room temperature, optimizing theprocessing by avoiding further furnace usage. | - |
dc.format.extent | 11 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Design and Development of High-Entropy Alloys with a Tailored Composition and Phase Structure Based on Thermodynamic Parameters and Film Thickness Using a Novel Combinatorial Target | - |
dc.type | Article | - |
dc.identifier.wosid | 001036861200001 | - |
dc.identifier.doi | 10.1021/acsomega.3c02222 | - |
dc.identifier.bibliographicCitation | ACS OMEGA, v.8, no.31, pp 28333 - 28343 | - |
dc.description.isOpenAccess | Y | - |
dc.identifier.scopusid | 2-s2.0-85167913367 | - |
dc.citation.endPage | 28343 | - |
dc.citation.startPage | 28333 | - |
dc.citation.title | ACS OMEGA | - |
dc.citation.volume | 8 | - |
dc.citation.number | 31 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | PLASMA | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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