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Toplam kayıt 286, listelenen: 172-191
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Optimization of the Corrosion Behavior of Mullite Refractories Against Alkali Vapor Via Zrsio4 Addition to the Binder Phase
(University Chemistry & Technology, Prague, 2009)Effect of ZrSiO4 addition to the binder matrix of the reaction sintered mullite refractories on the alkali corrosion (Na2CO3, at 1370 degrees C) behaviour was investigated. Important improvements on the corrosion behaviour ... -
Optimizing mechanical quality factor of cymbal transducer
(Taylor & Francis LTD, 2006)In general, high mechanical quality factor 'Q(m),' which is the indication of low loss, is a desired property for transducers. However, low Q(m) and wide bandwidth are desired properties for underwater transducer. Therefore, ... -
Organized growth of carbon nanotubes on Fe-doped alumina ceramic substrates
(Pergamon-Elsevier Science LTD, 2012)Polycrystalline Fe-doped alumina (Al2O3) ceramics have been produced and used as a substrate for organized carbon nanotubes (CNTs) growth by catalytic chemical vapor deposition (CCVD). In these substrates, Fe3+ cations, ... -
Oxidation behavior of electrically conductive alpha/beta SiAlON composites with segregated network of TiCN
(Elsevier Sci LTD, 2012)The oxidation behavior of novel electrically conductive alpha/beta SiAlON composites with a continuous network of 2.5-10 vol% TiCN particulates was investigated. Composites, produced by coating spray dried granules with ... -
Oxidation behaviour and kinetics of alpha-SiAlON ceramics
(Taylor & Francis LTD, 2009)In this study, the oxidation behaviours of Y, Sin and Y/Sm doped alpha-SiAlON ceramics are investigated to examine the oxidation kinetics. The oxidation tests are carried out at 1300-1450 degrees C for different holding ... -
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 ... -
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 ... -
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 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 ... -
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 ... -
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 ... -
Processing of textured zinc oxide varistors via templated grain growth
(Elsevier Sci LTD, 2005)Textured, dense zinc oxide varistors were successfully fabricated by Templated Grain Growth (TGG) technique. Rod-like, anisotropic ZnO particles (templates) were synthesized by homogeneous precipitation method. The templates ... -
Processing, phase evaluation and mechanical properties of MoSi2 doped 4TaC-HfC based UHTCs consolidated by spark plasma sintering
(Elsevier Sci LTD, 2016)In this research, binary 4TaC-HfC based composites were consolidated using carbide materials and addition of 0-15 vol.% MoSi2 by means of spark plasma sintering at 2000 degrees C. The nearly full dense and monophase specimens ... -
Processing-structure-property relationship in rigid polyurethane foams
(Wiley, 2017)Rigid polyurethane (PU) foam is used as a thermal insulating and supporting material in domestic refrigerator/freezers and it is produced by reaction injection molding (RIM) process. There is a need to improve the thermal ...