As a main part of hydraulic cylinder, the piston rod is used in tough surrounding and corrosive condition; consequently a high quality protecting layer is essential. Currently EHC, electroplating hard chromium (hard chrome) is a widespread method for piston rod due to powerful performance and low cost. Unfortunately the plating process contains hexavalent chromium (Cr) which is toxic and carcin...

Graphene nano platelets (GNP) have several attractive properties, including excellent lubricity that can be used to develop wear-resistant coatings. Thermally sprayed chromium carbide–nickel (Cr3C2–NiCr) coatings are widely employed impart wear resistance engineering components. This work attempts improve the of high velocity air fuel (HVAF) Cr3C2–NiCr by incorporating GNP using a hybrid approa...

In this study, a Cr3C2-NiCr cermet cladding layer was prepared on the surface of Q235 steel via high-speed laser method. The effects power, scanning speed, and overlap rate microstructure, quality, interfacial elements diffusion Cr3C2-NiCr/Q235 were studied. results show that there an obvious transition at interface steel, indicating had adequate metallurgical bond with matrix. Fe, Cr, Ni diffu...

A top DLC film was deposited on the surface of Cr3C2-NiCr coated 38CrMoAl steel substrate, and effect cermet interlayer thickness mechanical tribological properties duplex coating investigated by experimental analysis finite element modeling (FEM). Results shown that, compared with single film, load-bearing capacity performance DLC/Cr3C2-NiCr were significantly improved, especially its anti-wea...

In this paper, an engine piston ring coating comprising composite material of Fe3Al and Cr3C2 mixed powder was prepared by laser cladding onto carbon structural steel. The microstructure tribological properties the materials were investigated through X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission (TEM), wear tests. influence mecha...

Chromium carbide – nickel chromium powder Cr3C2-25wt.NiCr was plasma sprayed by a water-stabilized system WSP®. A series of experiments with variable feeding distance was carried out. Basic characterization of coatings was done by XRD, SEM and light microscopy plus image analysis. Microhardness was measured on polished cross sections. The main focus of investigation was on resistances against w...

The tribological properties of matrix and skeletal titanium carbonitride composites were studied in dry friction conditions air. Experiments on wetting the TiCN–Cr3C2 composite by nickel–chromium alloys copper using sessile drop method performed to choose composition ascertain whether samples could be produced impregnation porous skeleton. experiments showed that nickel its formed a low contact...

1. LI X.M., YANG Y.Y., SHAO T.M., JIN Y.S., BARBEZAT G., 1997, Impact Wear Performances of Cr3C2-NiCr Coatings by Plasma and HVOF-Spraying, Wear, 202/2, 208–214. Google Scholar