Porous Ceramics Mechanical Properties

Mechanical and thermal properties of porous yttria stabilized zirconia.

Porous ceramics mechanical properties. Porous ceramics have grown in importance in the industry recently because of their many applications like filters absorbers dust collectors thermal insulation hot gas collectors dielectric resonators bioreactors bone replacement and automobile engine components 1 2 3 4 generally porous ceramics have good properties such as mechanical strength abrasion resistance chemical and. Regarding pore stress interactions there is strong evidence in the literature 40 41 42 concerning the mechanical behavior of human bones also a quasi brittle material to support the hypothesis that microstructural changes in material may be essential in controlling its. The aim of this chapter is to review the mechanical properties of macro porous ceramics. Despite the large range in the reported mechanical properties of bone these act as a guide to the required mechanical properties of a scaffold.

The mechanical properties of porous ceramics are greatly influenced by their microstructure. The influence of the relative porosity on the mechanical properties of porous ceramics has been largely described in the literature mainly in terms of elastic modulus and bending strength more seldom in compression. Porous materials are commonly found in nature and as industrial materials such as wood carbon foams ceramics and bricks. Journal of asian ceramic societies.

The following issues are of particular interest to this paper. There have been a number of different microstructures or architectures of highly porous ceramic and glass scaffolds that have been used for tissue engineering applications. In order to use them effectively their mechanical properties must be. Glass is often not considered a ceramic because of its amorphous noncrystalline character.

Various types of the sacrificial fugitives have been examined for obtaining well tuned shape and size of pores. Carefully tailored micro structure size morphology and orientation of grains and pores etc of porous ceramics has led to unique mechanical properties which cannot be attained even in the dense materials. Therefore mechanical behavior of highly porous ceramics is different from that of dense ceramics. Then they take into account the mechanical properties of porous ceramics depend on pores stress interactions.