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Boriding kinetics and mechanical properties of borided commercial-purity nickel

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dc.creator UÇAR, Nazım
dc.creator DELIKANLI, Kamil
dc.creator CARKCI, Mustafa
dc.creator Karakas, S.
dc.creator CALIK, ADNAN
dc.date 2017-09-30T21:00:00Z
dc.date.accessioned 2020-10-06T11:22:33Z
dc.date.available 2020-10-06T11:22:33Z
dc.identifier c28950b3-1ef3-49e0-a545-444523b0d1eb
dc.identifier https://avesis.sdu.edu.tr/publication/details/c28950b3-1ef3-49e0-a545-444523b0d1eb/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/71292
dc.description Kinetics of boride layer growth and tensile behaviour in bonded commercial-purity nickel was investigated. Bonding was carried out in a solid medium consisting of Ekabor-II powders at 1173, 1223 and 1273 K for periods of 3, 5 and 8 h. Scanning electron microscopy (SEM) and optical microscopy showed column morphology in the boride layer. X-ray diffraction (XRD) analyses indicated that the boride layer formed on the surface consisted mainly of Ni2B, with precipitates of Ni6Si2B. A parabolic relationship between layer thickness and processing temperature was observed. The obtained results showed that although the boride layer thickness increased with increasing boriding temperature and time, boriding parameters had no significant effect on the hardness of the boride layer or the matrix. Tensile properties were negatively influenced by the bonding treatment; both yield and tensile strength values decreased due to the presence of the hard yet brittle surface coating. In addition, the growth kinetics of boride layers was also analysed. The results showed a nearly parabolic relationship between the layer thickness and the process temperature, with activation energy of 47.3 kJ mol(-1).
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title Boriding kinetics and mechanical properties of borided commercial-purity nickel
dc.type info:eu-repo/semantics/article


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