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Non-elastic behaviours of high-porosity ceramics and ceramic-polymer composites
|Yuriy M. Podrezov 1, S O. Firstov 1, M Szafran 2, Krzysztof J. Kurzydlowski 2|
1. Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Krzizanovsky, Kyiv 38(044), Ukraine
High porosity ceramics and ceramic-polymer composites are now widely applied in a number of fields and in particular in medicine. The present paper is focused on mechanical properties of these materials and possible ways for their improvement. One of them is via increasing relative stiffness. The other is by rising the fracture toughness and deformation energy, which can be achieved by increasing the volume fraction of pores due to non-elastic behaviours of high porosity ceramics under bending. The third method is to increase absorbing capacity of strain energy. In the paper the sensitivity of these three effects to the microstructure of pores and solid phase is analysed and methods for microstructure optimisation are proposed.
Presentation: oral at E-MRS Fall Meeting 2003, Symposium E, by Yuriy M. Podrezov
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-08 15:51 Revised: 2009-06-08 12:55