Abstract
The Special Issue on Tribology and Surface Engineering includes nine research articles and one review article. It concerns a very important problem of resistance to wear and shaping the properties of the surface layers of different materials by different methods and technologies. The topics of the presented research articles include reactive direct current magnetron sputtering of silicon nitrides on implants, laser surface modification of aeroengine turbine blades, laser micro-texturing of titanium alloy to increase the tribological characteristics, electroplating of Cu–Sn composite coatings incorporated with Polytetrafluoroethylene (PTFE) and TiO2 particles, arc spraying of self-lubricous coatings, high velocity oxygen fuel (HVOF) spraying and gas nitriding of stainless steel coatings, HVOF spraying composite WC-Co coatings, testing of coatings deposited by physical vapour deposition (PVD), and also analysis of material removal and surface creation in wood sanding. The special issue provides valuable knowledge based on theoretical and empirical study in the field of coating technologies, as well as characterization of coatings, and wear phenomena.
Highlights
The progressive wear of moving parts and components of machines or tools under operating conditions is a natural phenomenon, leading to a gradual decrease in performance, efficiency and work parameters of a given element
The used machine parts or tools need to be replaced with new ones, which is usually associated with the need to temporarily shut down the machine or the entire technological process
The results revealed that the despite serious decarburization of nanostructured WC-Co coatings resulting in formation of W2 C and W phases, the nanostructured WC-Co coatings have the densest microstructure with lowest porosity, the highest fracture toughness, and they exhibit the highest resistance to cavitation erosion wear
Summary
The progressive wear of moving parts and components of machines or tools under operating conditions is a natural phenomenon, leading to a gradual decrease in performance, efficiency and work parameters of a given element. In the case of composite coatings, usually dispersion particles or phases with high hardness provide increased wear resistance Another significant achievement in materials engineering and manufacturing processes in recent years is the introduction and widespread use of nanomaterials, as well as amorphous materials [10,11,12,13,14,15,16]. In this case the thickness of the coatings is small and the manufacturing process is time consuming, and extremely expensive Another issue is the shaping properties of surface layers to improve the tribological characteristic and wear resistance by various surface engineering methods including heat treatment and thermochemical treatment. In order to provide the durability and reliability of components of machines or tools an individual approach to each of the working surfaces is required, choosing the proper material, design its microstructure, and application the optimal method of manufacturing or processing
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