Abstract
The stabilizing device is a component of the automatic surveying robot. To address wear and tear on the friction plates during use, graphene (Gr)/high-entropy alloy coatings were applied to the aluminum alloy friction plates using laser cladding technology. A systematic study was conducted on the alloy using scanning electron microscopy/EDS, a hardness tester, a friction and wear tester, etc. The experimental results show that the coating bonds well to the substrate. The Gr/CoCrFeNiNbx coating is mainly composed of equiaxed crystals, with Gr playing a strengthening role and Nb element playing a fine grain strengthening role. The coating has excellent mechanical properties, with a microhardness between 462−487 HV and an average friction coefficient between 0.46−0.54. Through practice, laser cladding a Gr/CoCrFeNiNbx coating on the surface of the stable device of the automatic surveying robot ensures its normal operation and extends its service life.

Key words
laser additive manufacturing, coating, robot device, automatic surveying, high entropy alloy, wear resistance

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