Abstract
The tribological properties of the FePSiB amorphous/nanocrystalline coatings with Cr and Nb additions were investigated in reciprocating mode against tungsten carbide friction coupling with different dry sliding conditions. The wear rates of the FePSiB-based coatings increase linearly with the normal load and sliding speed. The coatings with Cr and Nb promote the formation of successive and compact oxide film on friction surface, which decreases significantly wear rate of the coating. Nano-mechanical characterization done to map the correlation between the elastic properties and wear resistance. The main damage mechanisms of the FePSiB-based coatings under dry friction conditions are abrasion wear, delamination failure and oxidation wear.
Highlights
The discovery of metallic glass coating (MGCs) technology is a remarkable way of making use of the superior properties of amorphous alloys for structural applications [1,2,3,4]
The effects of normal loads and sliding speeds on tribological performance of the FePSiB-based amorphous/nanocrystalline coatings were explored in detail
The nano-mechanical properties of the FePSiB-based coatings were measured on the cross section by Hysitron TriboIndenter (TI-750L, Hysitron, Inc., Minneapolis, MN, USA)
Summary
The discovery of metallic glass coating (MGCs) technology is a remarkable way of making use of the superior properties of amorphous alloys for structural applications [1,2,3,4]. MGCs have been proved an effective way to improve surface properties such as anti-corrosion and wear resistance [2,3,4,5,6,7,8]. Coatings 2018, 8, 463 been contrasting characterization results reported previously with different elements’ additions, research on tribological behaviors and mechanisms of FePSiB-based amorphous and nanocrystalline coatings remains inadequate. The effects of normal loads and sliding speeds on tribological performance of the FePSiB-based amorphous/nanocrystalline coatings were explored in detail. The relationships between tribological behaviors and mechanical properties of the FePSiB-based amorphous/nanocrystalline coatings have been emphatically discussed
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