Modelo predictivo del espesor de la capa de óxido y microdureza en aluminio Al3003-B14 y Al6063-T6 anodizado usando análisis multifactorial

in this research, the thickness of the oxide layer and the microhardness of anodized aluminum al3003 and al6063 are modeled based on process parameters. to this end, studies of the microhardness and the thickness layer of the anodized surface were made, via techniques of multifactorial analysis and robust design. the following levels of the process parameters were established: temperature [15°c, 25°c], time [30min; 60min], electrolyte concentration [1,2m; 2m], current density [1amp/dm2; 3amp/dm2], aluminum [al3003, al6063], and as a noise parameter, the plastic deformation [0%, 10%, 20%, 30%]. a combined fractional design 27-2 was proposed, based on which a total of 48 tests were performed using sulfuric acid electrolytic solutions. the measurement of microhardness was performed using a vickers indenter loaded at 400g, and the thickness of the oxide layer was captured using electron microscopy. variance analysis (anova) was applied to the results in order to determine the significant factors and the robustness of the effects. results of microhardness [hv] [85,74-308,87]; and the oxide layer thickness [μm] [12,82 – 94,69] were determined. finally, the equations for the prediction models are shown for each response as a function of the significant factors, these equations will allow the selection of the microhardness and thickness of oxide layer to fulfill the requirements of a particular product using an appropriate selection of process parameters.