The use of biomimetic method for the preparation of bio-active coating on zirconia and alumina substrates was demonstrated. The biomimetic synthesis includes immersion of the implant material into the solution with a composition similar to human blood plasma and under physiological conditions. This method has several benefits, such as good surface coverage on materials with complex shapes, as well as good control over the coating thickness, crystallinity and phase composition.
COBISS.SI-ID: 23560743
In this article the use of nanostructured aluminate coatings for the improvement of the adhesion of dental luting agents to the surface of zirconia ceramics, which is used for the preparation of dental restorations, was demonstrated. The results show that the bond strength can be improved for more than 100 %. Furthermore, the strength remained unchanged even after the intensive thermocyclincg of the specimens, which is not the case when no coating was used.
COBISS.SI-ID: 26997977
In the presented work a simple method that exploits the hydrolysis of AlN powder was used to deposit a nanostructured boehmite coating onto a polished sintered Al2O3 substrate. The coating consists of interconnected polycrystalline nanoporous lamellasand exhibits a large specific surface area. After a subsequent chemical modification of the coatings with various lowenergy- surface chemicals the initially highly hydrophilic coatings were transformed into a hydrophobic ones.
COBISS.SI-ID: 23995943
In this article the preparation of so called “core-shell” composite, which is based on aggregation of particles of various size of same material in the suspension. The samples were shaped by slip casting and when completely dried, sintered in air to reach determined relative density. The prepared composites exhibit two times higher bi-axial flexural strength at 70 % of theoretical density, compared to the samples prepared only from micron-sized core material.
COBISS.SI-ID: 23812391
In this paper the investigation of thermal debinding of green parts in highly porous powder bed was investigated. It was discovered that in this process the removal of the binder follows two main mechanisms. At the temperatures from the binder melting point (60 °C) to 180 °C the binder is removed by thermal expansion and capillary suction of binder into highly-porous powder bed.On the basis of this research new theoretical model of binder removal up to 180 °C was developed and thoroughly experimentally verified.
COBISS.SI-ID: 23878439