Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.carbon.2019.06.043
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dc.titleMicromachining of ferrous metal with an ion implanted diamond cutting tool
dc.contributor.authorLee, Yan Jin
dc.contributor.authorHao, Li
dc.contributor.authorLuder, Johann
dc.contributor.authorChaudhari, Akshay
dc.contributor.authorWang, Shuangyin
dc.contributor.authorManzhos, Sergei
dc.contributor.authorWang, Hao
dc.date.accessioned2020-06-02T00:15:39Z
dc.date.available2020-06-02T00:15:39Z
dc.date.issued2019-11-01
dc.identifier.citationLee, Yan Jin, Hao, Li, Luder, Johann, Chaudhari, Akshay, Wang, Shuangyin, Manzhos, Sergei, Wang, Hao (2019-11-01). Micromachining of ferrous metal with an ion implanted diamond cutting tool. CARBON 152 : 598-608. ScholarBank@NUS Repository. https://doi.org/10.1016/j.carbon.2019.06.043
dc.identifier.issn00086223
dc.identifier.issn18733891
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/168902
dc.description.abstract© 2019 Elsevier Ltd Diamond is a highly favourable material for cutting tools, particularly in ultra-precision machining to produce highly accurate freeform surfaces with mirror-like finishing. Unfortunately, diamond cutting tools undergo catastrophic wear when machining transition metals such as iron, cobalt, nickel, etc. The underlying wear mechanism is understood to involve dissociation of carbon atoms from the diamond lattice, i.e. graphitization. Existing approaches of wear reduction aim at reducing chemical reactivity generally through process modifications. In this work, the effectiveness of ion implantation as a tool modification methodology is studied on the gallium ion irradiated diamond tools. Wear occurrences are compared between irradiated diamond and unmodified diamond using thermal analytical techniques and micromachining experiments. Calorimetric tests showed a more than 40% increase in activation energy required for graphitization with a Ga ion dose of 1 × 1013 ions/cm2 at 30 keV. Significant improvements in the wear resistance of an irradiated diamond tool are also observed in micromachining tests with the reduction in workpiece adhesion that indicates potentially lower heat generation at the tool-chip interface for the graphitization process. Ab initio calculations suggest an increased stability against exfoliation with the reduction in surface energy, which influences the surface-to-surface interaction between diamond and catalytic iron.
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.sourceElements
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectChemistry, Physical
dc.subjectMaterials Science, Multidisciplinary
dc.subjectChemistry
dc.subjectMaterials Science
dc.subjectGENERALIZED-GRADIENT APPROXIMATION
dc.subjectNANO-POLYCRYSTALLINE DIAMOND
dc.subjectTOTAL-ENERGY CALCULATIONS
dc.subjectMOLECULAR-DYNAMICS
dc.subjectSURFACE-ENERGY
dc.subjectWEAR
dc.subjectRAMAN
dc.subjectDISPLACEMENT
dc.subjectPSEUDOPOTENTIALS
dc.subjectCARBON
dc.typeArticle
dc.date.updated2020-06-01T01:48:42Z
dc.contributor.departmentDEPT OF MECHANICAL ENGINEERING
dc.description.doi10.1016/j.carbon.2019.06.043
dc.description.sourcetitleCARBON
dc.description.volume152
dc.description.page598-608
dc.published.statePublished
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