Investigation of biogenic hydroxyapatite after microwave and conventional sintering according to IR spectrum

Abstract

Ceramics based on biogenic hydroxyapatite obtained by microwave and conventional sintering at temperatures of 800, 900, 1000 and 1100 °C were investigated using IR-spectroscopy and DTG analysis. It was established that carbonate component decompose under microwave heating. Moreover, nonthermal interaction of field and material takes place, which leads to destroy conglomerates. The similar process occurs during the traditional sintering, but at higher temperatures, so formed the structure with larger grains compared to the microwave sintering. These changes were also confirmed by chemical analysis and structural studies.