Yazar "Turan, Servet" için Bildiri Koleksiyonu listeleme
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Capacitor discharge joining of silicon carbide based ceramics
Turan, Servet; Bucklow, IA; Wallach, ER; Turan, D (Trans Tech Publications LTD, 2002)A capacitor-discharge joining technique has been successfully used to join oxide ceramics using thin metal foils. In this study, silicon carbide (SiC) ceramic joints and silicon carbide-titanium diboride (TiB2) composite ... -
Chemical durability behaviour of bulk glasses in the SrO-Mn2O3-Fe2O3-MgO-ZrO2-SiO2 (SMFMZS) system
Karasu, Bekir; Arslan, Gürsoy; Günkaya, Göktuğ; Turan, Servet (Trans Tech Publications LTD, 2002)It is known that the SrO-MgO-ZrO2-SiO2 (SMZS) system glasses with 40 weight % silica content seem to give a very high chemical endurance against highly alkaline solutions and can be recommended for the reinforcement of ... -
The effect of copper oxide addition and the heat treatment temperature on the microstructure of zinc containing soft porcelain crystal glazes
Turan, Servet; Karasu, Bekir (IOP Publishing LTD, 2001)In tableware industry, decorative appearance of final products is very important from the view point of attracting customers. Therefore, not only decoration patterns but also colouring is taken into account. In zinc ... -
Interphase boundaries between hexagonal boron nitride and beta silicon nitride in silicon nitride silicon carbide particulate composites
Turan, Servet; Knowles, K. M. (Elsevier Sci LTD, 1997)Interphase boundaries between hexagonal boron nitride and beta-Si3N4 in hot isostatically pressed Si3N4-SiC particulate composites, in which boron nitride appears as a trace contaminant, have been examined using high ... -
Mechanical properties of melt infiltrated boron carbide-aluminium composites
Arslan, Gökhan; Kara, Ferhat; Turan, Servet (Trans Tech Publications LTD, 2002)Boron carbide (B4C)-aluminium (Al) composites were produced by melt infiltration of 2024-T3 series Al alloys into porous B4C compacts in the temperature range of 985 degrees -1370 degreesC under an inert atmosphere (Ar). ... -
Microstructural characterisation of melt infiltrated boron carbide-aluminium composites
Arslan, Gökhan; Kara, Ferhat; Turan, Servet (IOP Publishing LTD, 2001)The microstructure of boron carbide (B4C) - aluminium (Al) composites produced by reactive infiltration were characterised using a scanning electron microscope (SEM) and a transmission electron microscope (TEM) both attached ... -
Microstructure of capacitor discharge joined SiAlON and silicon nitride ceramics
Turan, Servet; Turan, Dilek; Bucklow, IA; Wallach, ER (IOP Publishing LTD, 2001)Silicon nitride based ceramics offer great potential for industrial applications. However, the joining of Si3N4 based materials is necessary in various applications and this can be difficult to achieve. A capacitor discharge ... -
Novel SiAlON ceramics for cutting tool applications
Mandal, Hasan; Kara, Ferhat; Turan, Servet; Kara, Alpagut (Trans Tech Publications LTD, 2003)New alpha-beta SiAlON ceramics were produced in aqueous medium by Using Multiple oxides as densifying additives. The sintered materials were characterised using a combinations of techniques such as XRD, SEM and TEM. The ... -
Orientation-dependent equilibrium film thickness at interphase boundaries in ceramic-ceramic composites
Turan, Servet; Knowles, K. M. (IOP Publishing LTD, 1997)Theoretical considerations of the Hamaker constant for the interaction of two media across a third suggest that the highly anisotropic nature of the refractive indices of a medium such as h-BN will produce an orientation ... -
Performance of new ?-ß SiAlONs in turning operations
Mandal, Hasan; Kara, Ferhat; Turan, Servet; Kara, Alpagut (2001)New ?-ß SiAlON ceramics were produced, characterised and tested in turning operations of cast iron. Cutting speeds varied between 400-1200 m/min while feeding rates were between 0.3 to 0.5 mm/rev. The results were compared ... -
Performance of new alpha-beta SiAlONs in turning operations
Mandal, Hasan; Kara, Ferhat; Turan, Servet; Kara, Alpagut (Trans Tech Publications LTD, 2002)New alpha-beta SiAlON ceramics were produced, characterised and tested in turning operations of cast iron. Cutting speeds varied between 400-1200 m/min while feeding rates were between 0.3 to 0.5 mm/rev. The results were ... -
Phase studies of reactive infiltrated boron carbide-aluminium composites by quantitative XRD
Arslan, Gökhan; Kara, Ferhat; Turan, Servet (Trans Tech Publications LTD, 2002)Fully dense (> 98 % of theoretical) boron carbide (B4C)-aluminium (Al) composites were produced between 985 degrees and 1370 degreesC by pressureless melt infiltration of Al alloys into porous B4C compacts under an argon ... -
Reactions at ceramic-metal interfaces in capacitor-discharge joined ceramics
Turan, Servet (Transtec Publications LTD, 1999)A capacitor-discharge joining technique has been used to fabricate zirconia-AlxNiyYz zirconia (ZrO2) joints, in addition, the surface of the ZrO2 tiles were sputter coated with Ti and joined using Al as an interlayer ... -
Transmission electron microscopy of interfaces in structural ceramic composites
Knowles, KM; Turan, Servet; Kumar, A; Chen, SJ; Clegg, WJ (Blackwell Science LTD, 1999)Ceramic composites based either on a particulate, fibre or a lamellar architecture are potentially useful as damage-tolerant high-temperature engineering materials. The ability of the interfaces in such systems to deflect ... -
Transmission electron microscopy of SrO containing multi-cation doped ?-SiAlON ceramics
Turan, Servet; Mandal, Hasan; Kara, Ferhat (2002)An advantage of ?-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 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, ... -
Wetting and non-wetting behaviour of silicon carbide grain boundaries
Turan, Servet; Knowles, K. M. (Transtec Publications LTD, 1999)Silicon carbide (SiC) grain boundaries have been observed to be free from intergranular films. On the basis of equilibrium film thickness calculations, it has been proposed elsewhere that because SiC has very high refractive ...