|About this Abstract
||Materials Science & Technology 2011
||Next Generation Biomaterials
||Porosity Dependent Strength and Elastic Modulus of Hydroxyapatite and Other Oxide and Non-Oxide Materials
||Eldon Case, Xiaofeng Fan, Fei Ren, Melissa Baumann, Y Shu
|On-Site Speaker (Planned)
Both dense and porous hydroxyapatite (HA) have a wide range of biomedical uses, ranging from dense coatings on implantable devices to porous bulk HA applications such as filters to block the flow of microorganisms in fluids and engineered bone materials. In each of these applications the mean fracture strength, <σf>, and the Young’s modulus, E, are important parameters. The dependence of <σf> and E on the volume fraction porosity, P, will be discussed for HA specimens over the porosity range from 0.08 to 0.62. We show that a single functional form can describe well the <σf> versus P and the E versus P behaviors for HA as well as for several oxides other than HA and non-oxide ceramics. Some possible connections to percolation theory will also be presented.