Başlık için Malzeme Bilimi ve Mühendisliği Bölümü listeleme
Toplam kayıt 444, listelenen: 271-290
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Photocatalytic studies of Ag/ZnO nanocomposite particles produced via ultrasonic spray pyrolysis method
(Elsevier Science Sa, 2014)Noble metal/semiconductor oxide nanocomposites have considerable interest on degradation of pollutants from textile wastewaters. Ag/ZnO, as one of the noble metal/semiconductor oxide nanocomposite, is highly efficient ... -
Piezoelectric actuator designs
(Springer US, 2008)Piezoelectric actuators are getting immiscible parts of many important electromechanical and smart systems. Smart systems consist mainly of sensors, actuators, and signal processing units. Actuators are the responding units ... -
Polarization insensitive single mode Al2O3 rib waveguide design for applications in active and passive optical waveguides
(Springeropen, 2015)Both passive and active, single mode, wavelength and polarization insensitive design of Al2O3 rib waveguides on SiO2 substrate is reported. Influence of the waveguide height, etch depth, waveguide width and operation ... -
Polarized emission from CsPbBr3 nanowire embedded-electrospun PU fibers
(IOP Publishing LTD, 2018)Interest in all-inorganic halide perovskites has been increasing dramatically due to their high quantum yield, band gap tunability, and ease of fabrication in compositional and geometric diversity. In this study, we ... -
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 ... -
A Preliminary Study on Cell Wall Architecture of Titanium Foams
(Materials Research Soc, 2009)Bio-inspired architectures, especially metallic foams, have been receiving an increasing interest for the last 10 years due to their unusual mechanical properties. Among commonly dealt foamed metals, like aluminum and ... -
Preparation and characterization of photochromic effect for ceramic tiles
(Soc Espanola Ceramica Vidrio, 2011)Ceramic tile industry is developing due to the technological researches in scientific area and new tiles which are not only a traditional ceramic also have many multiple functionalities have been marketed nowadays. These ... -
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 ... -
Preparation of nanosized tin oxide (SnO2) powder by homogeneous precipitation
(Elsevier Sci LTD, 2007)Synthesis of nanosized SnO2 ceramic particles via homogeneous precipitation was investigated as a function of processing parameters such as initial concentration and calcination temperature. Hydrous tin oxide was precipitated ... -
Preparation, Characterization and Catalytic Properties of SBA-15-SO3H Supported Tungstophosphoric Acid for Esterification Reaction
(Polish Acad Sciences Inst Physics, 2017)SBA-15-SO3H supported tungstophosphoric acid (TPA, H3PW12O40) mesoporous materials were synthesized by impregnation of TPA into the hydrothermally synthesized SBA-15-SO3H and the catalytic performances were compared for ... -
Pressing behaviour of spray dried alumina-zirconia granules
(Trans Tech Publications LTD, 2004)In this study, spray drying of alumina-zirconia slurries on a pilot scale, and their pressing behaviour were investigated. Slurries were prepared at 50 wt-% solid loading. An acrylic polymer emulsion, polyethylene glycol, ... -
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 ... -
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 ... -
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 ... -
Pressureless Melt Infiltrated Non-Oxide Ceramic-Metal Composites
(Trans Tech Publications LTD, 2009)In the present study highly dense (open porosity < 1 %), light-weight (d <= 2.85 g/cm(3)) and Al(4)C(3)-free non-oxide ceramic-metal composites were produced at comparatively low temperatures (<= 1250 degrees C) by pressurless ... -
Pressureless sintering of Al2O3-TiCN composites
(Trans Tech Publications LTD, 2004)A composition of 70 wt % Al2O3 + 30 wt % TiCN was prepared and pressureless-sintered at temperatures ranging from 1700 to 1840degreesC. In order to achieve densification, a powder bed was also employed. The resultant ... -
Pressureless sintering of hexagonal boron nitride powders
(Trans Tech Publications LTD, 2007)Pressureless sintering of hexagonal boron nitride (BN) with and without additives was performed using a powder which was previously nitrided at 900 degrees C and then heat treated at 1400 degrees C. Sintering additives ... -
Processing and characterisation of three-layer alumina-based composites with enhanced damage tolerance
(Elsevier Sci LTD, 2005)Three-layer alumina-based composites reinforced with iron in the inner layer and with chromium in the outer layers were fabricated by first uniaxially pressing the three-layer assembly, followed by cold isostatic pressing ... -
Processing of in-situ SiC reinforced AlN based composites
(Korean Assoc Crystal Growth, Inc, 2018)In this study, highly dense (>97%) in-situ SiC reinforced AlN based ceramic-metal composites were produced by pressureless reactive infiltration of 7075 aluminium alloys into porous alpha-Si3N4, alpha-Si3N4 + 4 wt. % carbon ... -
Processing of silicon carbide-boron carbide-aluminium composites
(Elsevier Sci LTD, 2009)The aim of this work was to shed light on the wetting mechanism in the SiC-B(4)C-Al system and to explore processing routes that enable infiltration of Al alloys into these ceramic powder mixtures without the formation of ...
