Some ways of strengthening the surface of corundum ceramics

For the first time corundum ceramics are treated with an electron beam, and they are also fired at high temperature with surface coatings made from high-melting and refractory compounds, i.e. titanium diboride, boron and zirconium carbides. Coatings are applied with magnetron deposition and a newly developed mechanochemical method. In all cases there is a considerable increase in the microhardness of treated materials and in some cases an increase in bending strength.