Structural Analysis of PM Biocomposites Based on Hydroxyapatite Nanopowders Elaborated by Spark Plasma Sintering Route
|Periodical||Solid State Phenomena (Volume 188)|
|Main Theme||Advanced Materials and Structures IV|
|Edited by||Mircea Nicoară, Aurel Răduţă and Carmen Opriş|
|Citation||Bebe Adrian Olei et al., 2012, Solid State Phenomena, 188, 52|
|Online since||May, 2012|
|Authors||Bebe Adrian Olei, Oana Gîngu, Nicoleta Lupu, Gabriela Sima|
The objective of this research is the development of a detailed structural analysis of biocomposites with ceramic matrix of hydroxyapatite (Hap) reinforced by titanium (Ti), elaborated by powder metallurgy technology. Nanometric Hap powders (<200nm) 75% wt and micrometric Ti powders (<150μm) are homogenized in a high energy ball mill Pulverisette 6. Spark plasma sintering (SPS) is the sintering route able to lead to nanostructured sintered samples when nanopowders are used as raw material. The SPS parameters are: the sintering temperature, T=(1000-1100)°C and the maintaining time, t=(10-20) minutes in vacuum. The influence of the sintering parameters on the composites structures is monitored using the optical microscopy (OM), electronic microscopy (SEM) and the X-Ray diffraction (XRD).