Structure and properties of porous ceramics obtained from aluminum hydroxide

Abstract

Abstract. In this paper the study of porous ceramics obtained from aluminum hydroxide with gibbsite modification is presented. The dependence of porosity and mechanical characteristics of the material sintered at different temperatures was studied. It was shown that compressive strength of alumina ceramics increases by 40 times with decreasing the pore volume from 65 to 15%. It was shown that aluminum hydroxide may be used for pore formation and pore volume in the sintered ceramics can be controlled by varying the aluminum hydroxide concentration and sintering temperature. Based on these results one can conclude that the obtained structure is very close to inorganic bone matrix and can be used as promising material for bone implants production.

The study of the behaviour of the ceramic composites ZrO2(MgO)-Al2O3 in a wide temperature range

“…Control of technological parameters of production of the composite, such as the dispersity of the initial system of the powder mixture and the sintering temperature, allows you to create products with a given porosity and dispersity of the distribution of pore size. These data are confirmed by the works [19][20][21][22], which show that regardless of which method of porosity formation is chosen, the porosity value is mainly affected only by the sintering temperature. The increase in temperature leads to a decrease in the average porosity.…”