Statement of Purpose: This article will report the study on a new generation bioactive ceramic, based on MgKPO4 (Magnesium Potassium Phosphate, abbreviated as MKP) for biomedical applications. A series of heat treatment experiments on the slip cast silica (SiO2) containing MKP ceramics were carried out at 900, 1,000 and 1,100C for 4 h in air. The density of the slip cast ceramic increased to 2....

Glass-ceramics from the studied system are able to precipitate a crystalline phase with an anomalous and low coefficient of thermal expansion. Besides called LEAZit (Low Expansion Alkaline Earth Zinc Silicate), other phases appear within those glass-ceramics. In order understand expansion behavior whole material, content has be known as function composition chosen heat treatment. this paper, gl...

Tailings, with their low utilisation rate and value, pose an urgent problem that needs to be solved. This study focused on foam ceramics glass granules, which were prepared using gold tailings as the main raw materials, microcrystalline investigated. The optimum sample (S6) of consists 77 wt% tailings, 6 talc, 9 bentonite, 2 calcite, 0.9 foaming agent 0.6% water reducer. temperature is 1190 °C,...

This paper reports a kinetic study on modified CVD process in porous ceramic substrates by both theoretical analysis and experimental approach. The theoretical analysis indicates that with a heterogeneous chemical reaction the decrease of the pore size is proportional to the deposition time and the pore closure time is proportional to the original pore size. While for a homogeneous reaction the...

BACKGROUND Silicate ceramic bonding is carried out by acid-etching with hydrofluoric acid (HF) followed by an application of silane. By replacing HF with ammonium polyfluoride, contained in the same flask as the silane, the number of steps in this clinical procedure, can be reduced, while maintaining bond strength values, and reducing toxicity. A shear bond test was performed to compare the con...

As a complex multiphase heterogeneous system in solid state, multifunctional active microalloyed alumo-silicate ceramics has an inhomogeneous structure with intergranular space, which is reflected number of structurally sensitive properties. A very space and numerous interactions between individual phases grains create new boundaries even more much smaller micrograins, are formed by grain fragm...

Selective oxidation of organics over an efficient heterogeneous catalyst under mild liquid phase conditions is a very demanding chemical reaction. Herein, we first report the modification surface mesoporous silica MCM-41 material by phosphate for incorporation Ti(IV) in framework to obtain highly ordered 2D hexagonal STP-1. STP-1 has been synthesized using tetraethyl orthosilicate, triethyl pho...

Changes in glass structure and crystallization behaviour from oxyfluoride silicate to germanate were studied by modifying the ratio of Si/Ge germanosilicate ceramics, transparent ceramic with low light scattering efficient mid-infrared emissions obtained. The NaYF4 nanocrystals ability was decreased increase Ge content, which can be attributed weakened oxide fluoride phase separation GeO2-rich ...

Lithium aluminum silicate (LAS, Li2O-Al2O3-SiO2) glass-ceramics have been employed in dentistry as substitutes while seldom orthopaedics. This is primarily due to difficulties with balancing the biomechanical and biological performance. study aims investigate effects of SiO2 content thermal treatment on formation Li2SiO3, Li2Si2O5 LiAlSi2O6 LAS glass-ceramics, these crystalline phases The prepa...