Abstract
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.
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