A fiber made by Furnace CVD was codoped with Erbium and Magnesium using a Flash Vaporization System for the first time. The fiber core is spontaneously formed as a Transparent Glass Ceramic (TGC). Due to the small nanoparticle size (<50 nm) and high volumetric density (10~10 m), the optical loss due to scattering is as low as < 0,6 dB/m. Erbium ions are highly concentrated within phase-separate...

Free silica (silicon dioxide) is naturally found in amorphous and crystalline forms in many rocks in the Earth . Inhaled silicon dioxide is usually crystalline and most often quartz which is the most important form. Silicosis is an irreversible disease that results from workrelated exposures to dusts containing silica crystals, and is characterized by fibrotic tissue reaction caused by the pres...

BACKGROUND Sandblasting particles which remain on the surfaces of dental restorations are removed prior to cementation. It is probable that adhesive strength between luting material and sandblasting particle remnants might exceed that with restorative material. If that being the case, blasting particles adhere to sandblasted material surface could be instrumental to increasing adhesive strength...

This article reviews the applications of silicone resins as ceramic precursors. The historical background of silicone synthesis chemistry is introduced to explain the production costs and supply availability of various silicones. Thermal degradation processes of silicones are classified in terms of the main chain structure and cyclic oligomer expulsion process, which determine the resulting cer...

An enhanced-temperature vat photo-polymerisation of ceramic-loaded mixtures, or so called hot ceramic lithography, has been presented in this paper, for 3D printing silica-based cores used the investment casting section parts aero and industrial turbines. The pre post-sintering properties printed highly depend on polymerisation degree base resin binders rheological behaviour slurry, lithography...

The film boiling chemical vapor process is an original and rapid synthesis method for ceramic coatings composites. This work reports the deposition of silica coating from tetraethyl orthosilicate (TEOS) by process. Experiments were carried out under atmospheric pressure between 900 °C 1100 °C. Several modifications experimental setup made in order to allow a better thermal monitoring. Silica fa...