Showing papers in "Ceramics International in 2002"

TL;DR: In this article, the feasibility of waste glass recycling in ceramic tile production was assessed with special reference to fully vitrified products (porcelain stoneware), and soda-lime float or container glass was introduced, in replacement of sodic feldspar, in typical porcelain Stoneware bodies.

TL;DR: In this article, a stoichiometric dense MgAl2O4 spinel has been prepared according to a conventional double stage firing process using AlCl3 as a sintering aid.

TL;DR: In this paper, the influence of Zn content on the densification and microstructure characteristics of specimens was studied and it was found that the samples have spinel cubic structure and sintered to about 97-98% of the corresponding X-ray density.

TL;DR: In this paper, the effect of ytterbium dopant on the dielectric properties of barium zirconium titanate (BZT) ceramics was investigated.

TL;DR: In this article, the influence of powder processing and sintering temperature on densification, microstructure and mechanical properties of hydroxyapatite (HAp) ceramics was studied.

TL;DR: The fraction of incinerator bottom ash with a particle size less than 8 mm produced at a commercial municipal solid waste incinerator was wet milled, dried, compacted and sintered at a range of temperatures to form ceramic materials.

TL;DR: In this article, the mesoporous molecular sieve MCM-41 with complementary textural porosity and high thermal stability that results from thicker wall has been achieved by decreasing surfactant/silicon ratio of synthesis gel.

TL;DR: In this article, the improvement of mechanical properties of hydroxyapatite (HA) with reinforcement of two (45.5 wt.% CaO) and three-oxide (28 wt% Na 2 O) glasses with different sintering temperatures is studied.

TL;DR: In this paper, six glass/ceramic composite materials were prepared from pure alumina and borosilicate glass (BSG) with chemical composition of 99.0 Al2O3 and 80.2 CaO wt.

TL;DR: In this paper, a mathematical model, including kinetic parameters, has been proposed to explain the extent of graphite oxidation with time, where graphite is mainly consumed by gaseous oxygen in air.

TL;DR: In this paper, the results of the feasibility study of utilizing fly ash from municipal waste incinerators by powder sintering technology were reported. But the major phase exhibited is gehlenite (Ca2Al2SiO7), which belongs to the melilite group.

TL;DR: In this article, the effect of manganese oxide and titanium oxide as additives on sintering of alumina is described, along with the mechanical properties, including sintered density, average grain size and microstructural features.

TL;DR: In this article, mesopores of MCM-48 silica material were filled with pyrolytic carbon by chemical vapor infiltration using propylene as carbon precursor, which led to an almost complete conversion into high surface area SiC material (120 m 2 /g).

TL;DR: In this paper, the effect of firing temperature on the bending strength of porcelain was investigated in the quartz-metahalloysite+kaolin-K-feldspar system with different quartz grain sizes.

TL;DR: In this paper, the effect of (W, Ti) content on the microstructure and mechanical properties of SiC/(W,Ti) ceramic composites has been studied.

TL;DR: In this paper, the viscosity, its time dependent behavior and the strength of the internal structure of the viscous slurry were characterized by static and dynamic measurements using a cone-plate viscosimeter.

TL;DR: In this article, the thermal and mechanical properties of sintered cordierite-based ceramic matrix composites containing dispersed particles of ZrO2 obtained by mixing clay-talc-alumina mixtures with additions of monoclinic ZRO2 up to 40 wt%.

TL;DR: In this article, the authors studied the sintering and crystallization processes of fine powders of parent glass with chemical composition (wt.%) 46.00 SiO 2, 15.90 Al 2 O 3, 1.20 Fe 2 O3, 0.42 TiO2, 23.50 CaO, 9.37 MgO, 0.98 K 2 O, 1.95 P 2 O 5 and 0.35 CaF 2 were studied.

TL;DR: In this article, the molar ratio of tetramethoxysilane (TMOS) precursor: methanol (MeOH) solvent: water (H 2 O): ammonium hydroxide (NH 4 OH) as a catalyst: methyltrimethoxylane (MTMS), as a hydrophobic reagent was fixed at an optimal value of 1:12:4:3.

TL;DR: The glass-ceramics showed good mechanical properties with a hardness of 6,730 MPa, fracture toughness of 1.86 Mpa m1/2 and bending strength of 127 MPa as discussed by the authors.

TL;DR: In this article, the authors used non-coated Tyranno SA fiber preforms as reinforcement and impregnation with only allylperhydropolycarbosilane (AHPCS) into the preforms.

TL;DR: In this article, a new gelcasting system has been analysed based on a solution of 1% chitosan in diluted acetic acid and reaction with glutaraldehyde. But the results showed that green parts could still be obtained by transferring these slurries to a mould and drying.

TL;DR: In this article, a detailed characterisation study involving determinations of chemical, thermal and granulometric parameters, as-received, and previously dried (110-°C) or calcined (1400-1450°C), sludge was used alone or combined with common ceramic raw materials, such as diatomite, kaolin or ball clay.

TL;DR: In this article, it has been found that increasing the content of the bustamite phase in the glasses, results in an increased bulk crystallinity when treated at 1000°C/2 h.

TL;DR: In this paper, the Zeta potentials of recrystallized silicon carbide powders dispersing in aqueous solution and the rheological property of the suspension were investigated.

TL;DR: Univ Mar del Plata, CONICET, INTEMA, Inst Invest Ciencia & Tecnol Mat, RA-7600 Mar Del Plata as mentioned in this paper, Argentina

TL;DR: In this paper, X-ray diffraction and IR absorption spectra were used for analysing the composition of Ni 0.6 Zn 0.4 Cr t Fe 2-t O 4 with t = 0.25 were prepared by the usual ceramic processing from high purity oxides.

TL;DR: In this article, the electrical conductivity, Vickers hardness, fracture toughness and wear resistance of the composites were studied, and the hardness and toughness increased gradually with the increase of TiC volume fraction.

TL;DR: The microstructural evolution on firing and quenching two commercial composition castable refractories, a vibratable ultralow cement castable and an in situ spinel low-cement castable, was fully characterized and related to high-temperature properties as discussed by the authors.

TL;DR: In this article, the bending strength and Weibull modulus of sintered ZTA parts prepared from Al2O3-ZrO2 (15 vol%) suspension by the gelcasting process were investigated.