Güncel Gönderiler: Mühendislik Fakültesi
Toplam kayıt 2037, listelenen: 61-80
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Development strategies for sialon ceramics
(2008)SiAlON ceramics have a wide range of applications due to their favorable mechanical and thermal properties. They are one of the main groups of materials being considered for high temperature load bearing applications and ... -
Optimization of ?-sialon microstructure by heat treatment
(2008)Nd-doped ?-SiAlON starting composition (Nd0.33Si 9.38Al2.62O1.62N14.38) was prepared by gas pressure sintering at 1825°C for 3 hrs. In order to explore the effect of post heat treatment on the developments of elongated ... -
Production and industrial adaptation of fast single firing wall tile opaque glass-ceramic glazes containing borax solid wastes
(2008)Zircon (zirconium silicate) is the main opacifier of glossy, opaque, white colored, frit-based wall tile glazes. However, zirconia containing frits employed in the preparation of these glazes increase the production cost ... -
Textured ?-SiAlON ceramics via templated grain growth
(2007)In this study, textured ?-SiAlON ceramic was produced by templated grain growth process. In order to enhance the alignment of the seeds, gated tape casting arrangement was utilized. Y-Ce codoped seeds were synthesized to ... -
Utilization of borax solid wastes in fast single-firing porcelain tile glass-ceramic glazes under industrial working conditions
(2008)In this investigation, the wastes of Eti Maden Kirka Boron Company of Turkiye were evaluated in the production of diopside and anorthite-based glass-ceramic glazes suitable for porcelain tiles fast and single-fired under ... -
The use of metarhyolites in porcelain stoneware production, llgin-Konya area, Turkey
(2010)The aim of this study is to determine the properties of metarhyolites from llgin-Konya (Turkey) area and to decide whether or not metarhyolites are suitable as a flux agent for porcelain stoneware tile production. For this ... -
Pressureless melt infiltrated non-oxide ceramic-metal composites
(2009)In the present study highly dense (open porosity > 1 %), light-weight (d ? 2.85 g/cm3) and Al4C3-free non-oxide ceramic-metal composites were produced at comparatively low temperatures (? 1250°C) by pressurless melt ... -
? › ß reverse phase transformation in silicon carbide in silicon nitride-particulate-reinforced-silicon carbide composites
(American Ceramic Society, 1996)The ? › ß reverse transformation in SiC is observed in Si3N4-particulate-reinforced-SiC composites made from as-received ?-SiC and ?-Si3N4 powders. However, the transformation does not occur to any great extent in composites ... -
Development of ?-ß SiAlON ceramics from different Si 3N4 starting powders
(2009)?-ß SiAlON ceramics were produced from different starting Si3N4 powders including P-Si3N4 and ?-Si3N4 powders and mixtures of these powders. Gas pressure sintering was used for sintering. After sintering, resultant fracture ... -
Investigation of PM parameters' effect on architecture of titanium foams using X-ray microtomography
(European Powder Metallurgy Association (EPMA), 2010)Titanium foams have been of interest in dental and orthopedic implants over the past few decades on account of their excellent mechanical properties, chemical stability, and biocompatibility. In this study, titanium foams ... -
?/ß SiAlON based composites incorporated with MoSi2 for electrical applications
(2010)Electrically conductive ?-ß SiAlON composites containing 30 vol. % MoSi2 was prepared by gas pressure sintering (GPS). The effect of sintering atmosphere on phase formation, grain growth, mechanical and electrical properties ... -
Modeling anisotropic single crystal growth kinetics in liquid phase sintered ?-Al2O3
(Kluwer Academic Publishers, Dordrecht, Netherlands, 2000)Single crystals of ?-alumina with {0001}, {11¯20} and {01¯12} orientations were embedded in a matrix of liquid phase sintered alumina to study ?-alumina single crystal growth in the presence of a calcium aluminosilicate ... -
Sintering behaviour of precursor mullite powders and resultant microstructures
(Elsevier BV, 1996)Crystallization and sintering behaviour of two structurally different diphasic precursor mullite powders were studied. Powder derived from boehmite and colloidal silica formed mullite at around 1250°C and could be sintered ... -
Reaction-bonded aluminium oxide (RBAO) process: II, the solid-state oxidation of RBAO compacts
(2000)The oxidation kinetics and the fraction of aluminum that is oxidized via solid-gas reaction in reaction-bonded aluminum oxide (RBAO) compacts are shown to be strongly dependent on the oxidation temperature and the ... -
Mechanical properties of magnesia-spinel composites
(2002)A set of dense magnesia-magnesium aluminate spinel composites has been prepared by hot-pressing magnesia powder using 0 to 30 wt.% of spinel powder of mean particle size 3, 11 and 22 µm. Bend stength, modulus, and fracture ... -
The Microstructural Studies in Limonite Containing Satin and Opaque Wall Tile Glazes
(2003)There have been a number of studies to investigate possible use of limonite and limonite-based pigments in different ceramic glaze systems. In these researches it was reported that Eskisehir Mihaliccik region's limonite ... -
Preparation of cordierite ceramics from talc with boron oxide addition
(2004)Thermal reactions of impure materials of talc, silica and alumina with moderate particle sizes were investigated to obtain a dense cordierite ceramic by boron oxide addition as a sintering aid. Mixed powders were uniaxially ... -
Synthesis of the CeO2 based pigments by using enriched rare-earth oxides located at eskişehir kizilcaören region
(2004)Pigments based on CeO2 structure are known to give various pink-orange and red brown colour in ceramic glazes. This type of pigments is prepared by high temperature calcination of CeO2 and Pr 6O11 with admixed rare-earth ... -
The characterization and the utilization of the waste clays from gümüşköy silver mine in brick industry
(2004)In this study, the main characteristics and technological properties of the waste clays from silver deposit located in the northern part of Kutahya (mid-south of Turkey) are presented. The clays were characterized by X-ray ... -
Mg+2 and Ce+3 doped ?-SiAlON ceramics
(2004)In the present work, stabilization of MgO and CeO2 in ?-SiAlON structure is studied. Mg and CeO2 were used in 50:50 molar ratios as additives. The mixture was sintered at 1830°C for 1 hour in gas pressure sintering furnace ...
