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TiMoN coatings with different Mo concentrations were deposited using a reactive magnetron sputtering technique and characterized by X-ray diffraction, nano-indentation, pin-on-disc testing, SEM/EDS and X-ray photoelectron spectroscopy. Mo alloying of TiN coatings generally enhances hardness. When tested in a pin-on-disc test against WC–Co pin, the coefficients of friction of TiMoN coatings were found...
Chemically-bonded composite sol–gel (CB-CSG) coatings have been developed that incorporate calcined ceramic powder particles (filler) dispersed in a sol–gel (SG) matrix (binder). As a result, they have significantly reduced densification strains compared to conventional SG coatings. The CB-CSG coatings, which are several orders of magnitude thicker than typical micron-thick SG films, can be produced...
Multiplated electrical contacts often undergo repeated dynamic loading. In the present study, a pivotal hammering impact wear tester was used to inflict wear scars on typical layered contact configurations. The wear life was observed to consist of three main stages: the plastic deformations stage; the zero wear stage; the measurable wear stage. Experimental observations of the wear behavior aided...
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