Abstract:

Aluminium alloys are alloys that are widely used in many industries due to their high custom resistance and are continuously developed to be able to adapt to today’s developing technology. The use of the 2XXX and 7XXX series of alloys, which can be hardened by collapse hardening within these alloy groups, is even more common. In this study, 7075 aluminum alloys have been covered with an amorphic tantal-oxide layer with the RF jumping method for the purpose of developing the stretching resistance. The coating layer has been applied to sample groups after bright, sanded, alkaline and alkaline acid processes, and the effect of the surface processes applied before coating on the coating performance has been studied. The effect on post-cover surface morphologies, using the scaned electron microscope (SEM) and energy distribution spectroscopy (EDS), the structural analyses were studied by the X-ray diffraction (XRD) method. Examination behavior of samples was carried out with ball-on disk examination test performed in dry sliding conditions at room temperature and with SEM examinations performed after examination, examination trace profile measurements, average volume loss calculations and examination rate assessments. After the covering process, the Ta2O5 hand is provided in an amorphic structure that does not contain fraction, emptiness and heterogeneity. The cover thickness is measured as 2.5-5μm. The highest stretching resistance among all samples was observed in samples covered after the alkaline and alkaline acid processes, and compared to the bright and unprocessed samples, the volume loss after stretching was observed reduced by 69-77%.

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