Resonant ultrasound spectroscopy was used to determine elastic constants and internal friction parameters of bulk nanoparticle-based ceramic materials compacted by spark plasma sintering. Boron nitride-based boron carbon were studied, the results compared with similar prepared from graphene nanoplatelets. The showed that such can be strongly anisotropic, have very different depending on nanopar...

background : in anterior endodontically treated teeth a better esthetic can be achieved by using all-ceramic post -core restorations instead of metal post systems. maximum retention and fracture resistance of the post are the criteria upon which selection of a post system is based. the aim of this study was to evaluate the fracture resistance and retention of two all-ceramic post and core syste...

This paper presents the results of testing a wear-resistant ceramic coating on work surface an internal combustion engine (ICE) cylinder’s sleeve. A combined formation technology is described that consists in applying aluminum layer to sleeve’s face by gas dynamic spraying and then covering this with microarc oxidation (MAO). tenfold reduction reinforced sleeve has been determined accelerated c...

In this study, the modification of macroporous α-Al2O3 ceramics with AlOOH nanostructures impregnated silver particles is carried out using bicomponent Al/Ag nanoparticles obtained by simultaneous electrical explosion Al and Ag wires. Nanoparticle suspension impregnation porous followed oxidation water shown to lead formation a continuous nanosheet coating on ceramic surface, releasing surface ...

Revision rates of total hip arthroplasty have decreased after introducing total hip arthroplasty (THA) using ceramic component, since ceramic components could reduce components wear and osteolysis. The fracture of a ceramic component is a rare but potentially serious event. Thus, ceramic on polyethylene articulation is gradually spotlighted to reduce ceramic component fracture. There are a few ...

Background: Metal ceramic restorations are highly popular and are used for most of the crown and bridge restorations made today. Aims: To evaluate the translucency and fracture strength of two all-ceramic and traditional metal ceramic crowns. Materials and Methods: Thirty crowns of similar size and shape were constructed to fit a standard brass die. Ten crowns were manufactured from each of the...

Orthopedic implants should have sufficient strength and promote bone tissue regeneration. However, most conventional are optimized for use either under high mechanical load or active osseointegration. To achieve the dual target of durability biocompatibility, polyether ether ketone (PEEK) filaments reinforced with internal titanium dioxide (TiO2) nanoparticles via dopamine-induced polymerizatio...