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Research of Surface Wear Resistance of Aluminum Alloy Modified with Minerals using Sclerometry Method
A comparative study of the wear resistance, hardness and modulus of elasticity of ENAW-2024 aluminum alloy samples with and without a mineral coating was carried out. The wear resistance of the samples was studied by the method of multi-cycle friction, which makes it possible to measure the physicomechanical properties of thin modified material layers at the nanoscale. After the modification of the sample surface, the surface hardness and elastic modulus decreased by 20–36% and by 22–38%, respectively. At the same time, the wear resistance of the surface of the sample, modified by minerals, increased by more than 12 times compared with the wear resistance of the surface without modification. The parameters of the modified surface of the aluminum alloy, measured by sclerometry, can be further used to construct models of the surface modified by ultrafine mineral particles and to calculate the processes of friction and wear.