Synthesis and Characterization of Akermanite by Mechanical Milling and Subsequent Heat Treatment

摘要

In this study, nano-structured akermanite was synthesized by mechanical milling and mixing using calcium oxide, magnesium oxide, cobalt oxide and silicon dioxide in a planetary ball milling with the speed of 500 rpm for 3 h. The milled powder was pelletized and sintered at 1200°C subsequently were characterized by X-ray diffraction (XRD), transmission Fourier transform spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) confirming FESEM a dense sintered akermanite. The diametral tensile strength (DTS) value of akermanite was found to be 5.71 MPa, which was in the range of human cancellous bone i.e. 1.5-38 MPa. Finally, akermanite induced obvious apatite formation on the surface after 7 days of soaking. All the results postulated that the akermanite ceramics might be potentially used as bone repair biomaterials for non-load bearing applications.