Canasite glass-ceramics fracture toughness

Figure 2-23 Fracture toughness of canasite glass-ceramic as a function of temperature.

Moreover, it must be noted that the fracture toughness of the glass-ceramic is a function of the temperature. This functional relationship is presented in Fig. 2-23. It shows that the value would drop to 1 MPa m - if the glass-ceramic were exposed to a temperature of 600 C. As a result, canasite glass-ceramics are better used at room temperature or other low temperatures. 

Apatite-canasite glass-ceramics demonstrate high fracture toughness of up to 3.9 MPa m° combined with special bioactive properties. Therefore, the material has been suggested for use as a biomaterial for replacing bone tissue. 

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