Ceramic Elastic Deformation

Thermodynamically stable cavities can absorb vacancies 37.

Ceramic elastic deformation.

Each atom tries to pull its neighbor as close as possible. Understanding elastic deformation is very important in ceramics to eliminate instantaneous brittle fracture at some applied stress levels. This change in shape is called deformation. The fracture stress is usually the same or very close to the elastic limit.

Pores can reduce the load carrying cross section area cause local stress concentrations and lower elastic moduli. This causes a force trying to resist the deformation. The complexity of the characters of ceramic materials enhances difficulties of evaluating the effect of various parameters on the plastic behavior of the materials. Plastic deformation of ceramic materials.

When a sufficient load is applied to a metal or other structural material it will cause the material to change shape. Deformation can be elastic or plastic. This causes the distance between atoms in the lattice to increase. When an exterior stress is applied to a solid body the body tends to pull itself apart.

There axe very few ceramic materials free of pores that are also free of a glassy phase which 81 was present as a liquid during firing. Author links open overlay panel philip c dokko joseph a pask. Grain and grain boundary processes contribute to plastic strain. This force is known as strain.