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Browsing by Author "Özdemir, Özkan"
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İpek, Mediha; Çelebi Efe, Gözde Fatma; Özdemir, Özkan; Bindal, Cuma; Cömert, Hüseyin (ELSEVIER SCI LTD, 2007)In this study, some properties of borides formed on the AISI 1040 and AISI P20 steel substrates were investigated. Boronizing was performed at 800, 875, and 950 degrees C for 2, 4, 6, and 8 h by using Ekabor 2 powders. The ...
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Özdemir, Özkan; Zeytin, Sakin; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2009)The production of intermetallic compound was carried out in an electrical resistance furnace in open air under 150 MPa uniaxial pressure at 1050 degrees C for 1 hour using aluminum powder with 15 mu m size and Carbonyl-nickel ...
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Özdemir, Özkan; Zeytin, Sakin; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2008)Boronizing was performed by using a solid medium of Ekabor powders at 1073, 1148 and 1223 K for 2, 4 and 8 h. After boronizing, the major dominant phase was found to be Fe2B and the minors were CrB and Ni2B. Boride coating ...
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Özdemir, Özkan (Sakarya Üniversitesi, 2004)ÖZET: Yanma Sentezi, İntermetalik Malzemeler, Reaktif Sinterleme, Nikel Aluminid, NiAl, Ni3Al, CoAl, Sertlik, Aşınma, Oksidasyon. Ni-Al sisteminde Ni3Al ve NiAl gibi intermetalik bileşikler düşük yoğunluk, yüksek ergime ...
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Özdemir, Özkan; Zeytin, Sakin; Bindal, Cuma (ELSEVIER SCIENCE SA, 2010)In this study, as an alloying element the effect of cobalt addition by 2.5 wt.% and 5 wt.% on the NiAl intermetallic compound produced by pressure-assisted combustion synthesis method was investigated. As starting materials ...
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Characterization of two-phase nickel aluminides produced by pressure-assisted combustion synthesis Özdemir, Özkan; Zeytin, Sakin; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2007)Two-phase (B2 + L1(2)) nickel aluminide intermetallic compounds were synthesized by the pressure-assisted volume combustion synthesis (CS). The production and characterization of the samples containing NiAl + Ni3Al were ...
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İpek, Mediha; Özdemir, Özkan; Bindal, Cuma; Cömert, Hüseyin (ELSEVIER SCI LTD, 2007)This study reports on an evaluation of borides formed on AIR P20 steel substrate. Boronizing was performed at 800, 875 and 950 degrees C for 2, 4, 6 and 8 h by using Ekabor 2 powders. The hardness of borides measured by ...
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Özdemir, Özkan; Şen, Şaduman; Şen, Uğur (PERGAMON-ELSEVIER SCIENCE LTD, 2007)In this study, chromium nitride coating was realized on AISI 1010 steels by nitro-chromizing treatment. Steel samples were tufftrided at 575 degrees C for 2 h in the first step of the coating process, and then chromized ...
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Özdemir, Özkan; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2006)Some properties such as hardness and fracture toughness of boride formed on the 99.97 wt% pure iron were investigated. Boronizing was carried out in a solid medium, consisting of Ekabor powders of 5% B4C as donor, 5% KBF4 ...
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Şen, Şaduman; Özdemir, Özkan; Demirkıran, Ayşe Şükran; Şen, Uğur (2012)
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Ergin, Nuri; Özdemir, Özkan; Demirkıran, Ayşe Şükran; Demirkıran, Ayşe Şükran; Şen, Şaduman; Şen, Uğur (POLISH ACAD SCIENCES INST PHYSICS, 2015)In the present study, the production of Inconel 718 nickel based superalloy was carried out in an electric current activated sintering in open air under a uniaxial pressure of 300 MPa using Al, Ni, Fe, Cr, Ti, Co, Fe-Nb ...
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Özdemir, Özkan; Zeytin, Sakin; Bindal, Cuma (ELSEVIER SCI LTD, 2012)The production of Ni3Al was performed under an uniaxial pressure of 150 MPa at 1050 degrees C for 1 h. The formation temperature of Ni3Al was determined to be 655 degrees C. The presence of Ni3Al was confirmed by XRD ...
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Özdemir, Özkan; Bindal, Cuma; Zeytin, Sakin (2012)
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Özdemir, Özkan; Zeytin, Sakin; Bindal, Cuma (ELSEVIER SCIENCE SA, 2008)In this study, aluminum powder with 15 mu m size and carbonyl-nickel powder with 4-7 mu m size having 99% and 99.8% purity, respectively were used in order to produce NiAl by volume combustion synthesis. The production of ...
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