Kurum Yazarı "Kara, Ferhat" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Quantitative X-ray diffraction analysis of reactive infiltrated boron carbide-aluminium composites
Arslan, Gökhan; Kara, Ferhat; Turan, Servet (Elsevier Sci LTD, 2003)Dense (> 98% of theoretical) boron carbide, (B4C)-aluminium (Al) composites were produced between 985 and 1370 degreesC by pressureless melt infiltration of Al alloys into porous B4C compacts under. argon (Ar) atmosphere. ... -
Reaction model for the boron carbide/aluminium system
Arslan, Gökhan; Kara, Ferhat; Turan, Servet (Trans Tech Publications LTD, 2004)An attempt has been made to shed light on the reaction mechanism during the production of B4C/Al composites by making use of the measured phase contents of the phases B4C, Al, Al3BC and AlB2. It was found that the agreement ... -
Spark plasma sintering of Si3N4-B4C composites
Ayas, Erhan; Kalemtaş, Ayşe.; Arslan, Gökhan; Kara, Alpagut; Kara, Ferhat (Ceramic Soc Japan-Nippon Seramikkusu Kyokai, 2008)In this study the production Of Si3N4-B4C Composites using spark plasma sintering technique was studied. This technique was preferred in order to minimize the reactions between starting constituents. Fully dense Si3N4 ... -
Spark Plasma Sintering of Silicon Nitride-Boron Carbide Composites
Ayas, Erhan; Kalemtaş, Ayşe.; Arslan, Gökhan; Kara, Alpagut; Kara, Ferhat (Trans Tech Publications LTD, 2009)Si(3)N(4)-B(4)C composites containing fine and coarse B(4)C particles were produced using Al(2)O(3) and Y(2)O(3) as sintering additives via spark plasma sintering (SPS) technique. Phase assemblages of the produced composites ... -
Transmission electron microscopy of SrO containing multi-cation doped alpha-SiAlON ceramics
Turan, Servet; Mandal, Hasan; Kara, Ferhat (Trans Tech Publications LTD, 2002)An advantage of alpha-SiAlON is that it can accommodate cations of sintering additives and hence reduces the amount of deleterious remnant intergranular amorphous phase. However, it is believed that relatively large cations ... -
Transmission electron microscopy studies of La2O3-doped alpha-SiAlON ceramics
Turan, Servet; Mandal, Hasan; Kara, Ferhat; Knowles, KM (IOP Publishing LTD, 1999)alpha-SiAlON is able to accommodate cations into its crystal structure if the cations are sufficiently small in size, thus helping to reduce the volume of the remnant grain boundary phase after processing. In this study, ... -
Wear behavior of solid SiAlON milling tools during high speed milling of Inconel 718
Çelik, Ali; Alagac, Melike Sert; Turan, Servet; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2017)Machining of Inconel 718 is a challenging process because of high hot strength and hardness, high reactivity with the tool materials and low thermal conductivity of Inconel 718 alloy. Although SiAION ceramics in the form ... -
Wear on SiAlON ceramic tools in drilling of aerospace grade CFRP composites
Çelik, Ali; Lazoğlu, İsmail; Kara, Alpagut; Kara, Ferhat (Elsevier Science Sa, 2015)Carbon fiber reinforced polymer (CFRP) composites are difficult to cut materials due to their anisotropic structure and extremely abrasive nature of the carbon fibers. The tool materials used for drilling of CFRP composites ...