To compensate for the different wear loads in a given plant component, combinations of various wear protection materials have been found to be economical solutions in practical applications; thanks to this, it is possible to allow for every strength and surface property.
The choice of material is decisive for the calculation of the cost of materials. The use of more expensive materials is justified for extreme wear situations, high application temperatures, and/or extreme temperature fluctuations. For example, using aluminium oxide, zirconium oxide, and silicon oxide ceramics extends the service life from two to eight times the service lives of less expensive materials such as cast basalt or hard ceramic. The two-material principle: The wear protection material is applied to the substrate or base material that provides the mechanical and constructional strength. In general, all materials can be combined with each other.