Showing papers in "Ceramics International in 2008"

TL;DR: In this paper, a porcelain stoneware composition was prepared by mixing 50% kaolinitic clay, 40% feldspar and 10% quartz, and the sintering behaviour of the fired samples was evaluated by linear shrinkage, water absorption and porosity measurements.

TL;DR: In this paper, an ethanol sensor based on ZnO nanowires was fabricated by applying silver electrode at each end of the tube and inserting a coil heater into the tube.

TL;DR: In this article, the optical properties of self-cleaning applications were investigated using spin coating, dip coating and screen printing techniques on glass substrates using XRD, AFM, SEM, surface profilometer, UV-vis spectrophotometer and contact angle measurement.

TL;DR: In this article, the effects of various antioxidants, Al, Si, SiC and B4C on the oxidation resistance of magnesia-carbon bricks were investigated at temperatures of 1300 and 1500°C.

TL;DR: The synthesis and microwave dielectric properties of CaSiO 3 nanopowder by sol-gel method have been investigated in this paper, where an average grain size of 50-60nm was obtained by calcining the CaO-SiO 2 xerogel that was prepared from Calcium nitrate tetrahydrate (Ca(NO 3 ) 2 ·4H 2 O) and tetraethylortho silicate (TEOS).

TL;DR: In this paper, the effects of reaction conditions on the product morphology as well as crystallization mechanism were investigated by using X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), energy dispersive Xray spectrograms (EDS), and transmission electron microscope (TEM) techniques.

TL;DR: In this paper, the ferroelectric properties of barium zirconate titanate (BZT) ceramics were investigated by conventionally mixed-oxide method and it was shown that increasing Zr content in the BaTiO 3 -based compositions caused a decrease in Curie temperature.

TL;DR: The feasibility of recycling red mud and fly ash in the aluminium industries by producing glasses and glass-ceramics has been investigated by DTA, XRD, optical microscopy techniques as mentioned in this paper.

TL;DR: In this article, six glasses with different molar ratios of CaO/B2O3/SiO2 (designed as CBS-3, CBS-5 and CBS-6) were prepared and pulverized, and they were sintered at different temperatures to reach maximum densification.

TL;DR: In this article, the feasibility to substitute feldspar raw material in a porcelain stoneware body with Panel Cathode Ray Tube (CRT) glass was investigated.

TL;DR: In this paper, the procedure for preparing concentrated agarose solutions by dissolving under overpressure conditions was evaluated for the gelcasting of alumina foams, and the rheological behavior of the alumina suspensions containing agaroses was studied.

TL;DR: Porous silica ceramics with tri-modal pores were prepared, based on the generation of foams from silica/starch composite slurry and the subsequent stabilization of the structure by starch consolidation as mentioned in this paper.

TL;DR: In this paper, an aluminum dross waste from plasma processing for Al metal reclamation was tested as a replacement raw material in refractories, and the results of physical and mechanical tests indicated that the waste may be applied directly, without prior calcination, as a substitute for fine structural components.

TL;DR: In this paper, a polymeric scaffold constituted of polymethylmethacrylate balls (PMMA), welded together by a thermal forming treatment, is impregnated with a TCP aqueous suspension.

TL;DR: In this paper, two series of polyaniline-TiO2 nanocomposite materials were prepared in base form by in situ polymerization of aniline with inorganic fillers using TiO2 nanoparticles (P25) and Hombikat, respectively.

TL;DR: In this article, phase transition temperature and electrical properties of divalent ions (Ca 2+, Sr 2+ and Ba 2+ ) substituted (Bi 1/2 Na1/2 )TiO 3 (BNT)-based ceramics were investigated to investigate the relationship between the substituted ion and the effect on various characteristics.

TL;DR: In this article, a sintering profile comprising non-isothermal and two-step sinterings was devised, yielding discs with %Dth of 96.5% using dilatometry analysis.

TL;DR: In this paper, carbon nanotubes were used to increase the hardness, elastic modulus and inter-laminar shear strength of monolithic hydroxyapatite layers.

TL;DR: Transparent YAG ceramics were prepared by slip casting an aqueous dispersed mixture of commercial Al 2 O 3 and Y O 3 powders as mentioned in this paper, which were co-dispersed with poly(acrylic acid) and citric acid.

TL;DR: The effect of the heating temperature on the properties of sintered ceramic bodies from three different contaminated marine sediments was investigated by means of the variation of shrinkage degree, bulk density, water absorption, open and closed porosity, while the phases transformation were investigated by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM).

TL;DR: In this paper, the authors used In2O3 powders with respect to purity, morphology and sinterability for planar sputtering targets, and reported positive experience in the development and manufacturing of ITO ceramic planar SPT targets.

TL;DR: In this article, three bio-phosphate glass-specimens with and without Al 2 O 3 addition were prepared to shed light on their bioactivity behavior towards the simulated body fluid biological solution (SBF).

TL;DR: In this paper, the effect of drying techniques on the dispersion and agglomeration of silica nanoparticles were studied using alcohol-dehydration (AD), freeze-drying (FD), and oven drying (OD) techniques.

TL;DR: In this paper, a modified combustion synthetic route using both citric acid and succinic acid separately and in mixture as fuels and nitrate and nitric acid as oxidants has been investigated.

TL;DR: In this article, the effects of MgO content on the structure and properties of glass-ceramics were investigated by differential scanning calorimetry (DSC), X-ray diffractometry (XRD), infrared spectrophotometry (IR) and scanning electron microscopy (SEM).

TL;DR: In this paper, a gel combustion method with citric acid as fuel and nitrate as oxidizer was used to synthesize neodymium doped yttrium aluminum garnet (Nd:YAG) powders.

TL;DR: In this article, a biomimetic method using polyethylene glycol (PEG) was used to synthesize spherical nano-hydroxyapatite (nano-HA).

TL;DR: In this paper, a Si-infiltrated carbon-bonded carbon fiber composites (CBCF) was modified by direct reaction with molten silicon in order to obtain a silicon carbide layer on the composite surface.

TL;DR: In this paper, small solid solution limits of Zn and Mg in Zn 2 SiO 4 are observed, and the bi-phase structure is confirmed in (Mg 1− x Zn x ) 2 Si O 4 ceramics with x ǫ = 0.1-0.9.

TL;DR: In this article, the effect of manganese doping on structure, dielectric, ferroelectric and ferromagnetic properties, and resistivity was investigated, and it was shown that Mn-dopant can improve the sintering ability of the materials when MnO 2 content is below 0.3