Although the zirconia ceramic cylinder liner is a material that is not easily separated, it will undergo a certain deformation under a certain external force, and this deformation is reversible, which means that once the external force on the zirconia ceramic cylinder liner is removed , it can return to its original shape.
If it is a metal material, it generally goes through two stages of elastic deformation and plastic deformation before fracture under static tensile load at room temperature; but this is not the case for zirconia ceramic materials. It generally does not undergo a plastic deformation stage and is extremely Brittle fracture occurs immediately after elastic deformation at a slight strain, and both 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 when stretched, which can Produces a small amount of compressive plastic deformation.
Tests have proven that the elastic modulus of zirconia ceramic materials is much larger than that of metals. The elastic modulus of zirconia ceramic materials is not only related to the bonding bond, but also related to the type, distribution ratio and porosity of its constituent phases. Because the forming of ceramics The sintering process has a significant impact on the elastic modulus.
As a brittle material, the strength of zirconia ceramic cylinder liner is much greater when compressed than when stretched; and compared with metal materials, it has good resistance to creep at high temperatures, and also has a certain Because of its plasticity, zirconia ceramic cylinder liner materials can be used in high temperature environments.
