Yayıncı "Elsevier Sci LTD" Seramik Mühendisliği için listeleme
Toplam kayıt 21, listelenen: 1-20
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alpha ->beta sialon transformation in calcium-containing alpha-SiAlON ceramics
(Elsevier Sci LTD, 1999)Recent studies on rare earth densified a-sialon ceramics have shown that the resulting alpha-sialon product, present either as a single phase or in conjunction with beta-sialon, is unstable when heat treated at lower ... -
Boron nitride-silicon carbide interphase boundaries in silicon nitride-silicon carbide particulate composites
(Elsevier Sci LTD, 2002)Interphase boundaries between SiC and h-BN grains in hot isostatically pressed Si3N4-SiC particulate composites made from both as-received powders and deoxidised powders, in which sub-micron size h-BN particles occur as a ... -
Characterisation of biscuit fired bone china body microstructure. Part 1: XRD and SEM of crystalline phases
(Elsevier Sci LTD, 2002)As a ceramic material bone china is a highly specialised product and is the basis of the world's most attractive and expensive types of tableware, mainly due to its translucency, whiteness, bright glaze, decoration quality, ... -
Characterisation of biscuit fired bone china body microstructure. Part II: Transmission electron microscopy (TEM) of glassy matrix
(Elsevier Sci LTD, 2002)In this second part oft lie study, electron transparent specimens of the biscuit fired bone china body were prepared for a conventional transmission electron microscopy (TEM) study. The crystalline phases present in the ... -
The development and characterisation of zinc crystal glazes used for Amakusa-like soft porcelains
(Elsevier Sci LTD, 2000)In porcelain production, as well as bodies expected to have white colour, compaction and translucency, suitable glaze compositions have great importance from both a technological and decoration point of view. Supplying the ... -
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 ... -
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 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 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 ... -
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 ... -
Functional composites for sensors, actuators and transducers
(Elsevier Sci LTD, 1999)Following the trend in structural applications, composite structures are being used more commonly in transducer applications to improve acoustic, mechanical and electrical performance of piezoelectric devices. Functional ... -
Hydrated aluminium sulfate precipitation by enzyme-catalysed urea decomposition
(Elsevier Sci LTD, 2000)Hydrated basic aluminium hydroxide precipitates were obtained from aluminium sulphate solution at room temperature and at 92 degrees C by using urea. Enzyme urease was used to decompose urea at room temperature. It was ... -
Improvement of sintering and microstructural homogeneity of a diphasic mullite
(Elsevier Sci LTD, 2001)Effect of seeding of boehmite-colloidal silica mixture with aluminium sulphate-colloidal silica mixture on its mullite formation and sintering behaviours and microstructural development was studied. It was observed that ... -
Interactions between an ABS type leadless glaze and a biscuit fired bone china body during glost firing. Part I: preparation of experimental phases
(Elsevier Sci LTD, 2002)In this paper, part of an extended study, crystalline phases of a biscuit fired bone china body, namely anorthite and beta-tricalcium phosphate (beta-TCP), were produced experimentally to be used in subsequent interface ... -
Interactions between an ABS type leadless glaze and a biscuit fired bone china body during glost firing. Part II: investigation of interactions
(Elsevier Sci LTD, 2002)This part of the study involves the investigation of the interactions between an ABS type commercial leadless glaze and a biscuit fired bone china body during glost firing at different temperatures using XRD and SEM ... -
Interphase boundaries between hexagonal boron nitride and beta silicon nitride in silicon nitride silicon carbide particulate composites
(Elsevier Sci LTD, 1997)Interphase boundaries between hexagonal boron nitride and beta-Si3N4 in hot isostatically pressed Si3N4-SiC particulate composites, in which boron nitride appears as a trace contaminant, have been examined using high ... -
Investigation of the phase composition and stability of the alpha-SiAlONs by the Rietveld method
(Elsevier Sci LTD, 2002)Different compositions of Y- and Nd-alpha-SiAlONs were sintered at 1825 degreesC and analysed by the XRD method. The Rietveld technique was used for characterisation of the diffraction pattern and the x value of alpha-SiAlON, ... -
New developments in alpha-SiAlON ceramics
(Elsevier Sci LTD, 1999)Two different alpha-sialon compositions have been densified by either pressureless sintering or capsul-free sinter HIPing using either single cation namely strontium, lanthanum, cerium, neodymium or their equimolar mixtures ...