Güncel Gönderiler: Makale Koleksiyonu
Toplam kayıt 286, listelenen: 41-60
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Mineralogical and technological properties of underclays in Sile Region, Istanbul, Turkey
(2007)Sile Region, northeastern Istanbul, includes the most important underclay deposit of Turkey. In the area, Upper Cretaceous calc-alkaline volcanic rocks are the major parent rocks of the Neogene sequence composed of plastic ... -
Proprietà Mineralogiche e technologiche di argille sotto strato di carbone provenienti dall'area di Sile (Istanbul, Turchia)
(2007)Sile Region, northeastern Istanbul, includes the most important underday deposit of Turkey. These days are composed of disordered kaolinite, illite, mixed-layer illite-smectite, smectite, gibbsite, quartz, pyrite, anatase, ... -
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 ... -
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 ... -
Composite transducer arrays for the treatment of diabetes
(Wiley, 2005)A portable transdermal drug delivery system using a composite transducer array has been designed to promote insulin transmission through the skin using ultrasound. Previous investigators used large, heavy sonicators in ... -
Deaging of heat-treated iron-doped lead zirconate titanate ceramics
(Amer Inst Physics, 2006)Doping strongly influences the properties of ferroelectric perovskite materials. One striking difference between donor- and acceptor-doped materials is the transition from "soft" to "hard" ferroelectric behavior. The ... -
Pressure limitations of miniature hollow sphere hydrophones
(Taylor & Francis LTD, 2005)Ultrasonic probes that can withstand high pressures and temperatures are needed for deep oil wells, underwater sonar systems, the processing of chemicals, and as automotive actuators. Pressure limits of hollow spherical ... -
Pressure dependence of cymbal transducers
(IEEE-Inst Electrical Electronics Engineers Inc, 2007)The hydrostatic pressure limit that a receiver can withstand without failure is of major importance in underwater sonar systems. In this paper, the hydrostatic pressure tolerance and sensitivity of cymbal receivers were ... -
Possible use of trachyte as a flux in floor tile production
(Techna Srl, 2006)The possible use of trachyte as an alternative fluxing agent in a commercial floor tile body was investigated. The experiments were carried out two parts: In the first part, standard tests were applied to the products ... -
Image analysis of sulfate attack on hardened cement paste
(Elsevier Sci LTD, 2008)This paper presents an investigation conducted on the sodium sulfate resistance of Portland cements with various C(3)A contents, and on two blended cements produced by replacing 40% Of low C3A cement with fly ashes having ... -
Fixed-bed catalytic pyrolysis of cotton-seed cake: Effects of pyrolysis temperature, natural zeolite content and sweeping gas flow rate
(Elsevier Sci LTD, 2006)Catalyzed pyrolysis of cotton-seed cake was studied under different experimental conditions. Variables investigated were pyrolysis temperature, zeolite content and sweeping gas flow rate. Experiments were carried out ... -
Catalytic pyrolysis of biomass: Effects of pyrolysis temperature, sweeping gas flow rate and MgO catalyst
(Pergamon-Elsevier Science LTD, 2010)Cotton seed, as a biomass source, is pyrolysed in a tubular fixed-bed reactor under various sweeping gas (N(2)) flow rates at different pyrolysis temperatures. In the non-catalytic work, the maximum bio-oil yield was ... -
Bio-oil production from rapid pyrolysis of cottonseed cake: product yields and compositions
(Wiley, 2006)Fixed-bed fast pyrolysis experiments have been conducted on a sample of cottonseed cake to determine the effects of pyrolysis temperature, heating rate and sweep gas flow rate on pyrolysis yields and chemical compositions ...
