Investigation of microstructural, mechanical and tribological properties of magnesium matrix composites reinforced with ZnO-hBN nanoparticles

In this study, %100ZnO, %99ZnO-%1hBN, %95ZnO-%5hBN, %90ZnO-%10hBN and %100hBN nanoparticles were produced by sol gel nanoparticle synthesis method. Scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-rays (EDS) and Fourier Transform Infrared Spectroscopy (FT-IR) analyzes to examine the structural and morphological properties of the finished samples and to check whether the nanoparticles are combined or not. examined. The nanoparticles, which were seen to be combined in the analysis results, were mixed with AZ91 Magnesium alloy in an ultrasonic mixer and nanocomposites were formed. In the assembling process, 10% ZnO, 9.9%ZnO-0.1hBN, 9.5%ZnO 0.5%hBN, 9.0%ZnO-1.0%hBN and 10% hBN nanoparticles were added to a total of 10% by weight. Pressing process of the samples whose preparation process was completed, using powder metallurgy method and sintering processes at 590 °C for 8 hours in accordance with magnesium sintering conditions were carried out in Argon atmosphere. Polishing and sanding processes were carried out for the samples whose waiting period was completed. Microhardness measurements were carried out in a microhardness tester. Abrasion tests for Mg-ZnO, Mg-ZnO-1hBN, Mg-ZnO-5hBN, Mg-ZnO-10hBN and Mg-hBN samples were determined in a pin-on-disc tester for dry sliding wear properties. Wear tests were carried out at 5 N, 10 N, 15 N loads and 300 m sliding distance.