Strength of Material Hap-Borosilicate and Their Sintering Behaviors

Abstract

The high strength of hydroxyapatite is required for biomedical applications .Silicon (Si) and Boron ( Br) are added to get a higher strength material. The mixing process HAp, Si and Br is done by ball milling. This process is followed by the compression with the pressure of 70 kg/cm2 with comparison HAp: Si,Br = 85:15, 90:10 and 95: 5. Finally the mixture is sintered at temperatures of 1000°C. The material is characterized by X-Ray Diffraction (XRD). The hardness of their sample is determined by vickers hardness test. The compressive strength is measured by compression universal test machine. The maximum hardness is obtain for composition of 85:15 that is 47,3 Vickers Hardness Number (VHN) with maximum compressive strength of 3.48 MPa . So it was concluded that Si and Br can be improve the strength of bio composite hydroxyapatite.. keyword: High Strength, Hydroxyapatite, Biokompatible, Si, Br

Caracterization and Compressive Strength of Biocomposite Hydroxyapatite-Borosilicate with Hight Temperature Sintering

“…It means that the material is more resilient than hydroxyapatite-PMMA. And when compared to previous studies [7], with the same material but different processes, the results obtained in this study are much higher. This can be seen from the compressive strength value obtained by 3.48 MPa versus 32 MPa.…”

“…In previous study [7], production of borosilicate-hydroxyapatite biocomposite with mold pressure of 70 kg/cm 2 , borosilicate composition of 5, 10 and 15 wt% and sintering temperature of 1000 °C also, providing maximum compressive strength of 3.48 MPa. In this study, the formation of the borosilicate-hydroxyapatite biocomposite besides analyzing the characteristics occurring by the addition of borosilicate compositions and compaction forces of 5 KN, 15 KN and 25 KN, it is also analyzed mechanical properties biocomposite material.…”