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Malzeme Bilimi ve Mühendisliği Bölümü

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Browsing Malzeme Bilimi ve Mühendisliği Bölümü by Journal "Acta Physica Polonica A"

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    Article
    Citation Count: Ucar, N...et al. (20169. Diffusion Kinetics of Binary Ti-Ni Shape Memory Alloys. (2017)Conference: 3rd International Conference on Computational and Experimental Science and Engineering (ICCESEN) Location: Antalya, TURKEY Date: OCT 19-24. Acta Physica Polonica A, 132(3), 524-526.
    Diffusion Kinetics of Binary Ti-Ni Shape Memory Alloys
    (Polish Acad Sciences Inst Physics, 2017) Uçar, Nazım; Doğan, Şule; Özdemir, Ahmet Faruk; Karakaş, Mustafa Serdar; Çalık, A.; 48915
    In this work, the boriding of binary Ti-Ni shape memory alloys was carried out in a solid medium at 1173 and 1273 K for 2, 4, and 8 h using the powder pack method with Ekabor-Ni powders. The boride layer was characterized by optical microscopy and scanning electron microscopy. The obtained results show that boride layer thickness increases with the increasing boriding temperature and time. Depending on temperature and boride layer thickness, the diffusion process is thermally activated, with the mean value of the activation energy being close to 67 kJ/mol.
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    Citation Count: Calik, A.; Ozbakir, O.; Karakas, S.; Ucar, N. (2017). Investigation of the Erosive Wear Resistance of Boronized Ash-Blowing Nozzles, Acta Physica Polonica A, 131(2), 252-254
    Investigation of the Erosive Wear Resistance of Boronized Ash-Blowing Nozzles
    (Polish Acad Sciences Inst Physics, 2017) Çalık, A.; Özbakır, O.; Karakaş, S.; Uçar, N.; 48915
    In this study, pack boronizing was applied to ash-blowing nozzles manufactured from AISI 1040 steels using Ekabor II powders as the boronizing source at a temperature of 1273 K for a duration of 8 h. Erosive wear tests of boride ash-blowing nozzles were carried out in ash delivery line of thermal reactor under actual working conditions. It was observed that erosive wear resistance of borided ash-blowing nozzles were increased 3 times as a result of the boronizing process. The improved wear resistance of the borided samples can be explained by increased surface hardness and higher work hardening.