The effect of sintering temperature on the microstructure and mechanical properties of a bioceramic bone scaffold.

摘要: Abstract Micro and nanostructural properties are believed to play a critical role in the osteoinductive capacity of bioceramic bone scaffolds. Physical characteristics also an important for optimum biological performance, including osteoconductivity strength. In this study microstructural nano-mechanical scaffold were investigated as function sintering temperature range 950–1150 °C, through use scanning electron microscopy (SEM), X-ray diffraction (XRD) nanoindentation testing. Although samples presented same crystallographic phase, increase resulted increased grain size, density crystallite size. The intrinsic mechanical measured by testing analyzed with Oliver–Pharr method. tests consisted series fourteen partial unload ( n = 14 per treatment) twelve steps ranging from 1 to 12 mN. Statistically significant increases hardness elastic modulus increasing temperature. These results support development clinically successful scaffolds that encourage ingrowth provide structural integrity.