Anodic oxidation of aluminum alloy in a ternary solution of SAS (sulfuric, adipic and oxalic acids) was carried out in order to obtain the aluminum oxide layer (Al2O3) and Al2O3 with inorganic fullerene-like tungsten disulfide (IF-WS2) named in article as Al2O3/IF-WS2. The micro-hardness, thickness, geometric structure of the surface (SGP) and the microstructures of Al2O3 and Al2O3/IF-WS2 were investigated. The influence of electrolysis time, temperature and type of electrolyte on the micro-hardness of coatings was studied using the Taguchi statistical method. A L2 orthogonal array with the three main factors of control at two levels each was studied. Signal-to-noise ratio showed that the great influence of temperature on micro-hardness. The optimized electrolysis conditions were defined.Keywords: Aluminum oxide layer, inorganic fullerene-like tungsten disulfide, microstructures, hardness
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