doiSerbia

Development of porous ceramics by lycopodium using uniaxial pressing and sintering

Serzane Rita (Riga Biomaterials Innovation and Development Centre, Riga Technical University, Riga, Latvia)
Locs Janis (Riga Biomaterials Innovation and Development Centre, Riga Technical University, Riga, Latvia)
Berzina-Cimdina Liga (Riga Biomaterials Innovation and Development Centre, Riga Technical University, Riga, Latvia)
Sadretdinovs Romans (Riga Biomaterials Innovation and Development Centre, Riga Technical University, Riga, Latvia)

In this work microporous hydroxyapatite (HAp) ceramics were fabricated using lycopodium as a porosifier. The samples were produced by uniaxial pressing and then heating at high temperatures, 1100°C and 1200°C, to burn-out porogens and sintering. The obtained samples had porosity over the variable range of 12 to 45% with different pore size ranging from 0.2 to 25 μm. Chemical and physical characterization was determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and bending strength measurements. The bending strength of the prepared samples was in the range of 1.97-21.81 MPa.

Keywords: hydroxyapatite (HAp), porous bioceramics, lycopodium, uniaxial pressing, sintering