This review outlines the state of art, processing techniques, and mechanical testing methods zirconia (ZrO2)-based composites reinforced by carbon nanotubes (CNTs). The use CNTs as a secondary phase in matrix is motivated their outstanding crack self-healing ability, possibility to tailor desired nano-structural properties, exceptional wear behavior. Therefore, detailed investigation into CNT f...

Shape memory materials are a class of smart materials able to convert heat into mechanical strain (or strain into heat), by virtue of a martensitic phase transformation. Some brittle materials such as intermetallics and ceramics exhibit a martensitic transformation, but fail by cracking at low strains and after only several applied strain cycles. Here we show that such failure can be suppressed...

PURPOSE Zirconia ceramics are a viable alternative to titanium for use as dental implants. However, the smooth surface of zirconia means that longer healing periods are needed to accomplish osseointegration compared to roughened titanium surfaces. Surface modifications can be used to increase the roughness of zirconia. The aim of this study was to assess histologically and compare the degree of...

     Bioinert ceramics, like alumina and zirconia are used mainly for replacements of bones, hip joints and for dental implants. Partially stabilized zirconia ceramics (PSZ or TZP with 3 mol.% or 5 wt.% Y2O3), appear as perspective bioinert ceramics because of their high strength and corrosion resistance. In order to fabricate complex shapes, it is essential to use a near ...

The fracture toughness of ceramics can be improved by the incorporation of a variety of discontinuous, elastic reinforcing phases that generate a crack-bridging zone. Recent models of toughening by crack-bridging processes are discussed and used to describe the behavior observed in whisker-reinforced ceramics. The toughening response in ceramics reinforced with other types of discontinuous rein...

Identifying and quantifying the biological concentrations of certain biomolecules such as dopamine, glucose, tyrosine, cholesterol, etc. has become basis for medical diagnosis in treatment a number related diseases. In most cases, these biofluids like blood acts biomarker becomes crucial On other hand, advanced ceramics refers to oxides (alumina, zirconia), non-oxides: (carbides, borides, nitri...

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...

STATEMENT OF PROBLEM Colored zirconia is widely used in dental clinical practice; however, data pertaining to its wear resistance after different surface treatments are sparse. PURPOSE The purpose of this in vitro study was to evaluate the 2-body wear resistance of dental colored zirconia after different glazing and polishing treatments. MATERIAL AND METHODS Standardized specimens were prep...