In this article a simple method pfor the preparation of nano-structured alumina coatings is presented. The coating is prepared by precipitation of aluminum hydroxides originating form the hydrolysis of aluminum nitride powder in aqueous media.
COBISS.SI-ID: 22947623
The changes of rheological properties of ceramic powder-paraffin-wax suspensions, which occurs due to re-melting of these suspensions are presented and explained.
COBISS.SI-ID: 22863655
The wear resistances of four standard-grade high-alumina ceramics were evaluated and related to their machining ability. The cutting ability was found to be a valuable material characteristic for industrial practice, but it should not be directly used for predicting the wear rate during grinding.
COBISS.SI-ID: 23035175
Upon dental grinding and sandblasting, the surface of the material was heavily damaged in part plastically deformed, but the amount of transformed monoclinic zirconia was low. Dental grinding lowered the mean strength under static loading and the survival rate under cyclic loading. Sandblasting, in contrast, resulted in surface strengthening and substantially higher survival rate. The partitioned tetragonal zirconia grains and pre-existing monoclinic zirconia in the ground and sandblasted surfaces hindered the propagation of the diffusion-controlled transformation during subsequent ageing.
COBISS.SI-ID: 23034407
The theoretical predictions of controlling of interparticle interactions in paraffin-wax suspensions and their effect on the rheological properties of such suspensions were presnted and also experimentally confirmed.
COBISS.SI-ID: 22864167