Yazar "Anadolu Üniversitesi, Fen Bilimleri Enstitüsü, Seramik Mühendisliği Anabilim Dalı" için Makale Koleksiyonu listeleme
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Effect of electrolytes on sanitaryware slip
Özel, Emel; Ay, Nuran; Pütün, Ersan (Amer Ceramic Soc, 1999)Slip viscosity is used widely in controlling ceramic casting slip. The viscosity of slip changes with the amount and type of electrolyte. -
Effect of grinding time and MgO source on Cordierite formation
Kurama, Semra; Ay, Nuran (Amer Ceramic Soc, 2002)… -
The effect of heat-treatment on the performance of sub-micron SiCp-reinforced alpha-beta sialon composites .1. Preparation of agglomerate-free starting powders
Liu, Q; Gao, L; Yan, DS; Mandal, Hasan; Thompson, DP (Elsevier Sci LTD, 1997)In order to prepare good-quality, dense, SiCp-reinforced alpha-beta sialon composites by hot-pressing, a technique was developed to prevent agglomeration of the SiC grains during powder processing. For this purpose, the ... -
The effect of heat-treatment on the performance of sub-micron SiCp-reinforced alpha-beta sialon composites .2. Heat-treatment studies
Liu, Q; Gao, L; Yan, DS; Mandal, Hasan; Thompson, DP (Elsevier Sci LTD, 1997)The effects of heat-treatment on alpha --> beta sialon transformation in dense, agglomerate-free Ln-sialon/SiCp(Ln=Nd,Yb) composites are reported. The stability of the alpha-sialon phase is not only dependent on the ... -
The effect of heat-treatment on the performance of sub-micron SiCp-reinforced alpha-beta sialon composites .3. Mechanical properties
Liu, Q; Gao, L; Yan, DS; Mandal, Hasan; Thompson, DP (Elsevier Sci LTD, 1997)Agglomerate-free SiCp-reinforced Ln-sialon (Ln=Nd and Yb) composites were fabricated by hot-pressing and by pressureless sintering to evaluate the improvement in microstructure and mechanical properties that could be ... -
The effect of heat-treatment on the performance of submicron SiCp-reinforced ?-ß sialon composites: III. Mechanical properties
Liu, Q.; Gao, L.; Yan, D. S.; Mandal, Hasan; Thompson, D. P. (Elsevier BV, 1997)Agglomerate-free SiCp-reinforced Ln-sialon (Ln=Nd and Yb) composites were fabricated by hot-pressing and by pressureless sintering to evaluate the improvement in microstructure and mechanical properties that could be ... -
The effect of processing conditions, amount of additives and composition on the microstructures and mechanical properties of alpha-SiAlON ceramics
Kurama, Semra; Herrmann, M; Mandal, Hasan (Elsevier Sci LTD, 2002)A series of samples with yttrium alpha -SiAlON compositions and different amounts of additive has been fabricated from alpha -Si3N4, AIN, Al2O3 and Y2O3 starting powders, using gas pressure sintering and three different ... -
Effect of starting composition, type of rare earth sintering additive and amount of liquid phase on ? ? ß sialon transformation
Camuşcu, N.; Thompson, D. P.; Mandal, Hasan (1997)Five different ?-ß sialon and ?-sialon compositions have been prepared using different rare earth oxide additives namely, neodymium, samarium, dysprosium and ytterbium. Post-sintering heat treatments have been carried out ... -
Effect of starting composition, type of rare earth sintering additive and amount of liquid phase on alpha reversible arrow beta sialon transformation
Camuşcu, N.; Thompson, DP; Mandal, Hasan (Elsevier Sci LTD, 1997)Five different alpha-beta sialon and alpha-sialon compositions have been prepared using different rare earth oxide additives namely, neodymium, samarium, dysprosium and ytterbium., Post-sintering heat treatments have been ... -
Effect of starting Si3N4 powder type and sintering conditions on grain morphology of alpha-SiAlON ceramics
Kuşhan, Seniz Reyhan; Mandal, Hasan (Maney Publishing, 2002)Nitrogen rich multication alpha-SiAlON ceramics doped with Y-Ce have been densified by gas pressure sintering using alpha-Si3N4 or mixed beta/alpha-Si3N4 starting powder. The effects of alpha-SiAlON nucleation and growth ... -
Effect on grinding time and MgO source on cordierite formation
Kurama, Semra; Ay, Nuran (2002)[No abstract available] -
Effects of cobalt, copper, manganese and titanium oxide additions on the microstructures of zinc containing soft porcelain glazes
Karasu, Bekir; Turan, Servet (2002)Different types of glazes, which are nearly all based upon silicate compositions, are used to meet a wide range of requirements in service. Many artistic effects are achieved by departing from a clear, smooth, transparent ... -
Formation mechanisms and morphological changes during the hydrothermal synthesis of BaTiO3 particles from a chemically modified, amorphous titanium (hydrous) oxide precursor
Moon, J; Suvacı, Ender; Morrone, A; Costantino, SA; Adair, JH (Elsevier Sci LTD, 2003)The formation mechanism of BaTiO3 under hydrothermal conditions was investigated. A coprecipitated precursor prepared from chemically modified titanium isopropoxide with acetylacetone and barium acetate was used as a ... -
Frequency-tunable microwave dielectric resonator
Poplavko, YM; Prokopenko, YV; Molchanov, VI; Doğan, A (IEEE-Inst Electrical Electronics Engineers Inc, 2001)A new type of tunable composite dielectric resonator (DR) has been designed. In the structure of this DR, a controllable insert was used to change the resonance frequency (f(0)) in a wide spectral range, while preserving ... -
Hard and tough ?-SiAION ceramics
Mandal, Hasan; Hofmann, J. Michael (2000)Yb, Nd/Ca and Ce/Ca containing a-sialon starting compositions have been densified by either pressureless sintering or capsul free sinter/HIP'ing using "conventional" ?-Si3N4 powder. X-ray diffraction studies of both ... -
High resolution transmission electron microscopy of grain boundaries between hexagonal boron nitride grains in Si3N4-SiC particulate composites
Knowles, KM; Turan, Servet (Wiley-V C H Verlag GMBH, 2000)High resolution transmission electron microscope observations of grain boundaries in hexagonal boron nitride in which adjacent grains are rotated with respect to one another about either <2 (1) over bar (1) over bar 0> or ... -
How active silica affects slip properties of sanitaryware
Özel, Emel; Kurama, S; Ay, Nuran (Amer Ceramic Soc, 2002)… -
Hydrated aluminium sulfate precipitation by enzyme-catalysed urea decomposition
Kara, Ferhat; Şahin, G (Elsevier Sci LTD, 2000)Hydrated basic aluminium hydroxide precipitates were obtained from aluminium sulphate solution at room temperature and at 92 degrees C by using urea. Enzyme urease was used to decompose urea at room temperature. It was ... -
Improvement of sintering and microstructural homogeneity of a diphasic mullite
Kara, Ferhat; Şener, O (Elsevier Sci LTD, 2001)Effect of seeding of boehmite-colloidal silica mixture with aluminium sulphate-colloidal silica mixture on its mullite formation and sintering behaviours and microstructural development was studied. It was observed that ... -
Influence of sample thickness on the performance of photostrictive ceramics
Poosanaas, P; Doğan, A; Thakoor, S; Uchino, K (Amer Inst Physics, 1998)Ferroelectric materials with high photovoltaic properties are of interest for new optical devices such as photostrictive ceramic actuators. However, fabrication of these devices requires development of materials exhibiting ...