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.
Ramesh S, Jeffrey CKL, Tan CY, Wong YH, Ganesan P, Ramesh S, Kutty MG, Chandran H, Devaraj P.
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