Porous Ceramics Mechanical Properties

In order to use them effectively their mechanical properties must be.

Porous ceramics mechanical properties.

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. Various types of the sacrificial fugitives have been examined for obtaining well tuned shape and size of pores. Therefore mechanical behavior of highly porous ceramics is different from that of dense ceramics. The mechanical properties of porous ceramics are greatly influenced by their microstructure.

In this work we evaluate different mechanical testing methods such as static compression brazilian disc test and 3 point bending on their suitability for comparison of highly porous ceramic materials. Mechanical and thermal properties of porous yttria stabilized zirconia. Then they take into account the mechanical properties of porous ceramics depend on pores stress interactions. Glass is often not considered a ceramic because of its amorphous noncrystalline character.

However glassmaking involves several steps of the ceramic process and its mechanical properties are similar to ceramic materials. 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. Journal of asian ceramic societies. 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.

The following issues are of particular interest to this paper. 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. 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. Ceramics generally can withstand very high temperatures ranging from 1 000 c to 1 600 c 1 800 f to 3 000 f.