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Modeling Relations between Processing, Microstructure and Mechanical Properties of Porous Bioceramics

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Abstract:

Biphasic calcium phosphate (BCP) bioceramics, for use as resorbable bone substitutes, containing both isolated macropores and interconnected micropores, have been fabricated by sintering, using naphtalen particles as a porogen to produce macropores. The resulting ceramics contain ~ 45% macropores and various amounts of microporosity. Mechanical properties (compression and bending strength, toughness and hardness) have been measured and modeled by combining two approaches, at two different scales: the one describes the mechanical properties of a partly sintered stacking of grains, supposed to account for the interconnected microporosity, the other one holds in the case of closed and isolated macropores within a continuous matrix. The material is then represented as a quasi-continuous matrix containing macropores, the matrix being itself microporous. The model also considers that fracture always initiates on a macropore, which allows to set a correspondence between fracture toughness and fracture stress equations. The mechanical tests performed on the sintered ceramics tend to validate the modeling approach.

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Periodical:

Advanced Materials Research (Volumes 15-17)

Pages:

519-524

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.15-17.519

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Online since:

February 2006

Authors:

Franck Tancret, Jean Michel Bouler

Keywords:

Apatite, Calcium Phosphate, Fracture, Mechanical Property, Modeling, Porosity

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] G. Daculsi, O. Laboux, O. Malard, and P. Weiss: Current state of the art of biphasic calcium phosphate bioceramics, Journal of Materials Science: Materials in Medicine, Vol 14(3) (2003), pp.195-200.

DOI: 10.1023/a:1022842404495

Google Scholar

[2] A.S. Wagh, R.B. Poeppel and J.P. Singh: Open pore description of mechanical properties of ceramics, Journal of Materials Science, Vol 26(14) (1991), pp.3862-3868.

DOI: 10.1007/bf01184983

Google Scholar

[3] J.P. Jernot, M. Coster and J.L. Chermant: Model to describe the elastic modulus of sintered materials, Physica Status Solidi (a), Vol 72(1) (1982), pp.325-332.

DOI: 10.1002/pssa.2210720133

Google Scholar

[4] A.S. Wagh, J.P. Singh and R.B. Poeppel: Dependence of ceramic fracture properties on porosity, Journal of Materials Science, Vol 28(13) (1993), pp.3589-3593.

DOI: 10.1007/bf01159841

Google Scholar

[5] P. Arató, E. Besenyei, A. Kele and F. Wéber: Mechanical properties in the initial stage of sintering, Journal of Materials Science, Vol 30(7) (1995), pp.1863-1871.

DOI: 10.1007/bf00351623

Google Scholar

[6] F. Tancret, G. Desgardin and F. Osterstock: Influence of porosity on the mechanical properties of cold isostatically pressed and sintered YBa2Cu3O7-x superconductors, Philosophical Magazine A, Vol 75(2) (1997), pp.505-523.

DOI: 10.1080/01418619708205155

Google Scholar

[7] M. Suganuma: Scanning acoustic microscopy of indentation damage in Y2O3-stabilized tetragonal zirconia, Journal of the American Ceramic Society, Vol 78(11) (1995), pp.2889-2896.

DOI: 10.1111/j.1151-2916.1995.tb09060.x

Google Scholar