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Journal of Biomaterials Applications
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A Novel Akermanite Bioceramic: Preparation and Characteristics

Chengtie Wu

Biomaterials and Tissue Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1295 Dingxi Road, Shanghai 200050, People’s Republic of China, Graduate School of the Chinese Academy of Sciences 319 Yueyang Road, Shanghai 200050, People’s Republic of China

Jiang Chang

Biomaterials and Tissue Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences 1295 Dingxi Road, Shanghai 200050, People’s Republic of China, jchang{at}mail.sic.ac.cn

Akermanite (Ca2MgSi2O7) ceramics are prepared by sintering akermanite powder compacts at 1370 C for 6 h. The sintering behavior and mechanical properties of akermanite ceramics are investigated. The bioactivity of akermanite ceramics is evaluated by soaking in simulated body fluid (SBF), and hydroxyapatite (HAp) formation on the surface of akermanite ceramics after soaking is characterized by X-ray diffraction (XRD), energy dispersive spectrometry (EDS), and scanning electron microscopy (SEM). The results show that the bending strength of akermanite ceramics can reach 176 MPa, the fracture toughness is 1.83 MPa m1/2, and akermanite ceramics can induce HAp formation on their surface when soaked in SBF. Our results indicate that akermanite ceramics are bioactive, and possess improved mechanical properties compared with those of HAp ceramics and may be used as bioactive implant materials.

Key Words: akermanite • bioactivity • hydroxyapatite • simulated body fluid

This version was published on October 1, 2006

Journal of Biomaterials Applications, Vol. 21, No. 2, 119-129 (2006)
DOI: 10.1177/0885328206057953
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