Two-step sintering, phase transformations, electrical and mechanical properties of nanostructured bioceramic materials based on hydroxyapatite

Abstract

Hydroxyapatite based materials are still the most promising materials in the field of skeletal and dental tissue reconstruction. Improvement of their existing properties and broadening their application fields requires simultaneous achievements in synthesis and processing of advanced nanostructured materials, accompanied by understanding of basic principles governing their behaviour. In this study, overall procedure, from synthesis, processing and characterization of dense nanostructured hydroxyapatite and biphasic calcium phosphate, is presented. The consideration of nanosintering phenomena and influence of phase transformations on sintering behaviour of nanocrystalline Ca-deficient hydroxyapatite will be given. Electrical and mechanical properties will also be determined.