Zirconia CeramicsAlthough the cylinder liner is a material that is not easy to separate, it will undergo a certain deformation under a certain external force, and this deformation is reversible, which means that onceZirconia ceramic cylinderAfter the external force on the sleeve is removed, the original shape can be restored.
If it is a metal material, under the static tensile load at room temperature, it generally has to go through two stages of elastic deformation and plastic deformation before breaking; but zirconia ceramic material does not like this, it generally does not appear in the plastic deformation stage. Brittle fracture occurs immediately after small strain elastic deformation, and the elongation and area shrinkage are almost zero.
As far as metal materials are concerned, even very brittle cast iron has good tensile strength, but zirconia ceramics are different, so its elastic modulus when compressed is much higher than that when stretched. Produce a small amount of compression plastic deformation.
Tests have proved that the elastic modulus of zirconia ceramic material is much larger than that of metal, and the elastic modulus of zirconia ceramic material is not only related to the bonding bond, but also related to the type, distribution ratio and porosity of the composition phase, because the ceramic forming And the sintering process has a significant impact on the elastic modulus.