Properties of the nanopowder ceramics

The possibilities of producing ceramics from nanodispersed powders of silicon dioxide and hydroxyapatite have been investigated. The obtained ceramics with a fine-grained (3 - 10 ?m) structure. The properties of the initial nanopowder and ceramics have been studied by transmission and scanning electron microscopy and X-ray phase analysis. The glassy materials obtained from tarkosil (silicon oxide) powder are transparent in the ultraviolet range. Strong ceramic samples of hydroxyapatite with a grain and pore size of 1 ?m or less were obtained with open porosity uniformly distributed over the volume. The results of the study can be useful in the design of medical implants based on hydroxyapatite and ceramic membranes with controlled porosity. Il. 3, bibliography: 8 titles.