ANALYSIS OF THE PROPERTIES OF THE Al_2O_3 / IF-WS_2 SURFACE LAYERS OBTAINED IN THREE-COMPONENT' ELECTROLYTE

摘要

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 (Al_2O_3) and Al_2O_3 with inorganic fullerene-like tungsten disulfide (IF-WS_2) named in article as Al_2O_3/IF-WS_2. The micro-hardness, thickness, geometric structure of the surface (SGP) and the microstructures of Al_2O_3 and Al_2O_3/IF-WS_2 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.