Usage of oxide coatings

Coatings of oxides of different materials attract attention of researchers at present. In comparison with other high-temperature materials, the oxides have considerable hardness and durability on high temperatures. At present the aluminum oxide Al₂O₃ and zirconium dioxide ZrO₂ are more commonly used spraying materials. Often Al₂O₃ is preferred because it is harder. Some properties of the aluminum oxide are shown. Wear-resistant properties of Al₂O₃ coatings had been used in tools production. Aluminum oxide coating is a part of double coating with TiC and Al₂O₃, which is surfaced on the hard alloy plates of the gas phase. Plates with two-layer coating have got the GCO15 grade.