Flexible ceramics prepared by mimicking Itacolumite

Abstract

The ltacolumite (Konnyaku-Ishi) which exists naturally has a three-dimensional crack between the grain boundary similar to the jigsaw puzzle, and makes plastic deformation possible. In this research, we used the difference in thermal expansion coefficient of two ceramics, made crack similar to ltacolumite. Potassium zirconium phosphate (KZP), which has low thermal expansion, and potassium aluminum silicate (Leucite) which has high thermal expansion mixed at a predetermined rate and sintered after one axis pressurization forming. Particle diameter of KZP and Leucite were 100∼250 and 250∼500 μm. The crack could be made between the grain boundaries.