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Toplam kayıt 71, listelenen: 15-34
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Displacement amplification of electroactive materials using the cymbal flextensional transducer
(Elsevier Science Sa, 2001)High performance electroactive materials were studied as the driver element for the "cymbal" flextensional transducer. The compositions included were commercially available Navy Type I and PKT552 lead zirconate titanate ... -
The driving force for ??ß transformation in rare earth ? sialon ceramics
(1997)In-situ ??ß sialon transformation in rare earth sialon systems, which occurs when dense ?- and ?/ß-sialon samples are heat-treated at temperatures in the range 1300-1600°C was first observed five years ago, and has generated ... -
The effect of albite wastes on glaze properties and microstructure of soft porcelain zinc crystal glazes
(Elsevier Sci LTD, 2001)The efficient utilisation of waste materials arising from diverse industrial branches is of technological importance. As a replacement material for feldspar in some soft porcelain zinc crystal glazes, albite triage wastes ... -
Effect of ceramic processing methods on photostrictive ceramics
(Kluwer Academic Publ, 1999)Lanthanum-modified lead zirconate titanate (PLZT) ceramics (3/52/48) doped with 0.5 at.% WO3 were prepared by three different processing methods, coprecipitation, sol-gel and conventional oxide mixing techniques, to ... -
Effect of cobalt oxide and copper oxide additions to zinc-containing soft porcelain glazes
(Amer Ceramic Soc, 2001)… -
Effect of different starting hemihydrate powders on the performance of gypsum moulds
(Belgian Ceramic Society, 2003)In order to determine the effect of different starting hemihydrates (Plaster of Paris) on the life of gypsum moulds, microstructure of two different Plaster of Paris and gypsum moulds made from these hemihydrates have been ... -
Effect of electrolytes on sanitaryware slip
(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. -
The effect of heat-treatment on the performance of sub-micron SiCp-reinforced alpha-beta sialon composites .1. Preparation of agglomerate-free starting powders
(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
(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
(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
(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
(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
(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
(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
(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 ... -
Effects of cobalt, copper, manganese and titanium oxide additions on the microstructures of zinc containing soft porcelain glazes
(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
(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
(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 ...