Abstract:
The effect of pressureless sintering on the properties of magnesium orthosilicate-hydroxyapatite (MO-HA) ceramic has been studied. The amount of MO composition in the green body was varied from 10 wt% to 50 wt% through mechanical ball milling and was subsequently sintered at varying temperatures in air atmosphere from 1000 degrees C to 1300 degrees C for 2 h. The magnesium orthosilicate phase was stable during sintering but the hydroxyapatite phase decomposed to tricalcium phosphate. The MO-HA composites generally exhibited lower mechanical properties across all the investigated composition. Nevertheless, a high fracture toughness of 2.5 MPam(1/2) was recorded for sintered body that contained 20 wt% MO. This finding indicates the potential of this ceramic composite to be used for biomedical applications. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. Source: CERAMICS INTERNATIONAL Author: Ramesh S, Jeffrey CKL, Tan CY, Wong YH, Ganesan P, Ramesh S, Kutty MG, Chandran H, Devaraj P. Status; Paid open access available at ElSevier
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