Abstract Refractory ceramics were produced from clays and alumina waste. Specimens shaped by uniaxial pressing, subjected to thermal analysis dilatometry heat-treated in a conventional furnace at 1300 1400oC, applying heating rate of 5oC/min dwell time 2 3 hours the maximum temperature. The samples characterized X-ray diffraction (XRD), scanning electron microscopy (SEM) physicomechanical prope...

Excellent mechanical and isotropic optical properties are achieved simultaneously from fully dense polycrystalline advanced alumina ceramics with a hexagonal crystal structure, which optically anisotropic. A small amount (240 ppm) of ZrO2 additive is used to synthesize the transparent an average grain size 0.7 µm, locally detected distortion (birefringence) extremely minimized, less ...

Ceramics long history in biomedical field is related to their high biocompatibility and mechanical properties. Precisely, for joint replacements, wear resistance fundamental, so advanced ceramics as alumina zirconia are preferred. Developments ceramic additive manufacturing allow dense parts with improved properties shape accuracy. This paper focuses on the tribological analysis of stereolithog...