The Effect of Heat Treatment on the Structural-Phase State and Abrasive Wear Resistance of a Hard-Anodized Layer on Aluminum Alloy 1011

The aim of this study was to evaluate the effect heat treatment on phase composition, hardness, and abrasion wear resistance hard-anodized layers (HAL) 1011 aluminum alloy. X-ray diffraction analysis revealed Al2O3·3H2O in structure HAL synthesized for 1 h. While heat-treated HAL, oxide phases α-Al2O3(amorphous) γ-Al2O3(amorphous) types were found. Treatment at 400 °C h increased microhardness from 650 HV, its abrasive with fixed by up 2.6 times. ranking various ways hardening alloys relative D16 alloy showed that is 20 times higher. Plasma electrolyte oxidation 70–90 times, coating high-speed oxygen fuel 75–85 However, both methods are complex, energy-consuming, require fine grinding parts. Despite lower their synthesis cheaper does not fine-tuning Moreover, despite low hardness present, hard anodizing already commercially used harden engine pistons, clamshell rotators, pulleys.