Numerical bremsstrahlung cross sections for different ceramic compounds like Alumina (Al2O3), beryllia (BeO), ceria (CeO), Zirconia (ZrO2) were calculated by using Zmod of metallic compounds at different incident electron energies (10 keV,20 keV and 30 keV) in the photon energy regions of energy (1-10 keV,1-20 keV and 1-30 keV). The cross sections were calculated by using Elwert corrected (non ...

Zirconia–alumina composites couple the high toughness of zirconia with peculiar properties alumina, i.e., hardness, wear, and chemical resistance, so they are considered promising materials for orthopedic dental implants. The design performance needs to consider different aspects, such as type amount stabilizer sintering process, that affect mechanics toughening and, hence, mechanical propertie...

To enhance the mechanical properties in Ni-alumina nanocomposite coatings, it is necessary to increase the amount of alumina nanoparticles participation in nickel matrix. The aim of this study is the compassion investigation of Ni-Al2O3 nanocomposite coatings’ embedded nanoparticles affected by methanol addition to the electrolyte. In this investigation the composition of electrolyte was modifi...

objectives: this study aimed to evaluate the effect of different ceramic surface treatments after machining grinding on the biaxial flexural strength (bfs) of machinable dental ceramics with different crystalline phases. materials and methods: disk-shape specimens (10mm in diameter and 1.3mm in thickness) of machinable ceramic cores (two silica-based and one zirconia-based ceramics) were prepar...

Digital light processing (DLP) can produce small series ceramic parts with complex geometries and tiny structures without the high cost of molds usually associated traditional processing. However, availability feedstock different ceramics for technique is still limited. Mullite-zirconia composites are refractory materials diverse applications, nevertheless, their 3D printing has never been repo...

Corrosion resistance of zircon reinforced alumina refractories has been carried out through static crucible test. The corrosion measurements with percentage, the penetration depth of molten steel and the microstructure of the refractories were evaluated after soaking 150 h at the temperature of 1500˚C. Results showed that the corrosion resistance of alumina increased by adding 20 wt% zirc...

Due to their excellent mechanical properties and biocompatibility, zirconia-alumina composites are promising materials for bio-implant applications, including dental hip-joint implants. A higher content of zirconia phase is beneficial the fracture toughness composite material therefore more suitable implant while alumina resistant wear than zirconia, dominated often used in Studies about laser ...

Alumina-based nanocomposites reinforced with niobium and/or carbon nanotubes (CNT) were fabricated by advanced powder processing techniques and consolidated by spark plasma sintering. Raman spectroscopy revealed that single-walled carbon nanotubes (SWCNT) begin to break down at sintering temperatures >1150 C. Nuclear magnetic resonance showed that, although thermodynamically unlikely, no Al4C3 ...

Due to their aesthetic value and high compressive strength, dentists have recently employed ceramics for restoration materials. Among the ceramic materials, zirconia provides high toughness and crack resistant characteristics. Residual stresses develop in processing due to factors including grain anisotropy and thermal coefficient mismatch. In the present study, polychromatic X-ray (Laue) micro...

Ceramic materials are widely used for biomedical applications because of their remarkable biological and mechanical properties. Composites made of alumina and zirconia are particularly interesting owing to their higher toughness with respect to the monolithic materials. On this basis, the present study is focused on the in vivo behavior of alumina toughened zirconia (ATZ) dental implants treate...