Effect of Particle Morphology on Physical, Mechanical and Wear Properties of Cobalt Metal Powders

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dc.authoridÜnal, Fatma / 0000-0003-4476-2544
dc.authorwosidÜnal, Fatma / AAS-4308-2020
dc.contributor.authorBulut, Berrak
dc.contributor.authorÜnal, Fatma
dc.contributor.authorBaydoğan, Murat
dc.contributor.authorKayalı, Eyup Sabri
dc.date.accessioned2021-11-01T15:05:40Z
dc.date.available2021-11-01T15:05:40Z
dc.date.issued2021
dc.departmentHitit Üniversitesi, Mühendislik Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümü
dc.description.abstractCobalt is used in applications that require high densities and good mechanical properties. Cobalt powder is used in batteries, cemented carbides, stainless steel, machine tools and also in manufacturing of metal matrix diamond tools designed for the cutting and drilling of hard rocks and concrete. This study aimed to investigate the structural properties and compare the mechanical and micro structural properties of two different cobalt powders, specifically the spherical grain (Co-S) and rod-like grain shapes (Co-R), to enhance the cutting performances of the diamond cutting tools. The flow properties of the powders, as a function of the shear strain rate, were determined using Freeman Technology (FT4) rheometer analysis. The microstructural characterizations were conducted using scanning electron microscopy (SEM)-energy-dispersive spectroscopy (EDS) and X-ray diffraction (XRD) analyses, and the crystallite size values were calculated using the Williamson-Hall method. The mechanical characterizations were conducted using the density measurement, hardness, compression test, and wear test. Based on the results of the FT4 rheometer analysis, the Co-S powder had higher compressibility and air permeability compared to the Co-R powder. The SEM analysis of the sintered samples revealed multiple pores in the Co-R powder. The highest mechanical properties were obtained in the sintered sample of the S series. The most suitable Co powder for the preparation of metal matrix mixtures of diamond cutting tools produced using SPS was determined to be the Co-S series.
dc.identifier.citationBulut, B., Unal, F., Baydogan, M., & Kayali, E. S. (2021). Effect of Particle Morphology on Physical, Mechanical and Wear Properties of Cobalt Metal Powders. Transactions of the Indian Institute of Metals, 74(9), 2345-2355.
dc.identifier.doi10.1007/s12666-021-02331-5
dc.identifier.endpage2355en_US
dc.identifier.issn0972-2815
dc.identifier.issn0975-1645
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-85109001499
dc.identifier.scopusqualityQ2
dc.identifier.startpage2345en_US
dc.identifier.urihttps://doi.org/10.1007/s12666-021-02331-5
dc.identifier.urihttps://hdl.handle.net/11491/7361
dc.identifier.volume74en_US
dc.identifier.wosWOS:000667598800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÜnal, Fatma
dc.language.isoen
dc.publisherSpringer India
dc.relation.ispartofTransactions Of The Indian Institute Of Metals
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCobalten_US
dc.subjectMorphology of Powdersen_US
dc.subjectParticle Shapeen_US
dc.subjectRheologyen_US
dc.subjectSpherical Particlesen_US
dc.subjectRod-like Particlesen_US
dc.titleEffect of Particle Morphology on Physical, Mechanical and Wear Properties of Cobalt Metal Powders
dc.typeArticle

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