Apart from a good bioactive behavior, composite materials for dental applications should attain high mechanical properties. Thus, the aim of this work was the fabrication and characterization of novel sol-gel derived dental ceramics/bioactive glass composites and the investigation of their mechanical properties such as flexural strength and Weibull modulus. Fourier Transform Infrared Spectrosco...

A series of sintered glass-ceramics belonging to the system diopside–albite, forming by surface crystallization 30, 50 and 65% diopside, was investigated. In order to study the effect of bulk crystallization on the sintering a 0.7% of Cr2O3 as nucleation agent was added in one of the compositions. The crystallization was evaluated by DTA and density measurements and the degree of densification ...

To increase the bond strength of CAD/CAM-fabricated, leucite-reinforced glass ceramics with a resin cement, the effects of the following were investigated: surface modification by tribochemical (TBC) treatment, followed by combined application of a silane coupling agent and a functional monomer as a primer. Bond strength was evaluated by a shear bond test. It was found that a silane coupling ag...

Ferrimagnetic glass-ceramics are potential candidates for magnetic induction hyperthermia [1]. The aim of this work is the preparation and characterization of innovative bioactive ferrimagnetic glass-ceramics in the system SiO2– Na2O–CaO–P2O5–FeO–Fe2O3. These biomaterials contain different amounts of nanometric or sub-micrometric magnetite crystals, homogeneously distributed in an amorphous mat...

Waste derived glass ceramic composites prepared by low temperature sintering/sinter-crystallisation I. Ponsot, R. Detsch, A. R. Boccaccini & E. Bernardo To cite this article: I. Ponsot, R. Detsch, A. R. Boccaccini & E. Bernardo (2015) Waste derived glass ceramic composites prepared by low temperature sintering/sinter-crystallisation, Advances in Applied Ceramics, 114:sup1, S17-S25, DOI: 10.1179...

To study the cooperative dynamics in a superconductive ceramic or a Josephson-coupled network, the ordering process in a sintered specimen of YBa2Cu4O8 was examined. Critical phenomena at the intergrain phase transition in the system were considered based on recent experimental facts by nonlinear magnetic and linear and nonlinear electric response observations. Compared with theoretical predict...

The regenerator glass-ceramic is produced as a honeycomb product for a turbine engine heat exchanger. It is made from a powdered glass frit, which as a slurry can impregnate paper that is wound as alternately corrugated sheets on a wheel. After firing, a porous ceramic regenerator wheel is produced that allows energy to be transferred from hot exhaust gases to the cold intake air in the turbine...

This study was carried out to determine the design and thickness of the cervical margin of a castable ceramic restoration from the point of view of its castability. Castability of castable ceramics was lower compared to Ag-Pd-Au and Co-Cr alloy with the use of the mesh pattern and rod pattern test (p < 0.05). It was more dependent on the pattern thickness than alloys (p < 0.05), and perfect rep...

Quaternary glasses with the composition 50SiO2 – 25TiO2 5La2O3 (20-x) Na2O xY2O3 where x : (0 ≤ ≥ 10) were synthesized using melt-quench technique. XRD examined nature of prepared glasses. UV-spectroscopic investigated glass system studied at room temperature. Both optical bandgap and refractive index present have been increased. The polarizability basicity determined. Thermal parameter values ...

While ceramics are important materials for electronic and microsystem packaging, they are difficult to pattern lithographically. LEEDUS, a fabrication process combining lithography, electroplating, batch mode micro electro-discharge machining (µEDM) and batch mode micro ultrasonic machining (µUSM), is presented in this paper. This technology provides die-scale pattern transfer capability from l...