Корреляционный анализ параметров микротвердости и износостойкости пористых алюмооксидных покрытий от электрохимических режимов анодирования

Abstract

The effect of electrochemical and temperature regimes under potentiostatic and galvanostatic anodizing conditions in oxalic and sulfuric acids solutions on the microhardness and mechanical wear resistance characteristics of functional thick-layer alumina coatings with a thickness of ~10–50 μm has been studied. An improvement in the microhardness and wear resistance of Al2O3 with a decrease in current density, voltage, and electrolytes temperature has been shown. A comparative analysis of the structural and morphological parameters influence of porous Al2O3 formed on aluminum alloy AMG-2M and Al (99.95 %) plates on the microhardness and resistance to abrasive wear parameters has been carried out. Improved values of microhardness (~5.5 GPa) and wear resistance (~0.73 μm/h) of Al2O3 layers grown using optimized technological methods have been obtained.