The manufacture of sintered glasses and glass-ceramics, glass matrix composites, and glass-bounded ceramics or pastes is often affected by gas bubble formation. Against this background, we studied sintering and foaming of barium silicate glass powders used as SOFC sealants using different powder milling procedures. Sintering was measured by means of heating microscopy backed up by XPD, differen...

IR-transparent chalcogenide glass-ceramics were fabricated through a careful ceramization process of the as-prepared 65 GeS(2) x 25 Ga(2)S(3) x 10 LiI glasses at a temperature of 403 degrees C for various durations. Owing to the precipitation of Li(x)Ga(y)S(z) crystals with a Ga(2)S(3)-like structure, clear second-harmonic generation was observed in the sample crystallized at 403 degrees C for ...

QDT 2005 1 he restoration of missing or compromised tooth structure requires dental materials that offer toothlike esthetics, functionality, biocompatibility, and longevity. Silica-based ceramics (eg, feldspathic porcelain) offer all of these necessities and are the materials of choice for esthetic all-ceramic restorations (eg, laminate veneers, ceramic inlays and onlays, and full-coverage jack...

With the rapid development of microelectronic information technology, packaging has higher requirements in terms integration density, signal transmission speed, and passive component integration. Low temperature co-fired ceramics (LTCC) exhibit excellent dielectric properties low sintering properties, which meets above-mentioned requirements. This work investigates effects CaF2 doping (0–16 mol...

Among glass-ceramics, MgO-Al2O3-SiO2 (MAS) system occupies an important place due to its good characteristics. In this study, the magnesite waste being industrial was evaluated for production of MAS glass ceramics and properties glass-ceramics produced were examined. For purpose, mixtures prepared using waste, quartz, kaolin alumina raw materials according chemical composition cordierite. Furth...

Introduction Several attempts have been made to develop ceramic systems without metal frameworks. To date, there is an increasing range of dental ceramics allowing clinicians to combine very good esthetics with optimal mechanical properties, such as glass-infiltrated porcelain, aluminaand zirconia-reinforced ceramics . Several authors have described different surface treatments to improve the a...