Metal material is a kind of zirconia ceramic material, but many people don’t know what will happen if the metal material has no elasticity or deformation? The following is provided by Mingrui Ceramics will introduce to you the differences between zirconia ceramics and metal materials in terms of elasticity and deformation:
Although zirconia ceramic 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 once the external force on the zirconia ceramic is removed, it can be Restore 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 ceramics 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 certain plasticity at high temperatures. , so zirconia ceramic materials can be used in high temperature environments.
