Lubricated Conditions Imposed on Coating Multi-layer on Wear Resistance Under Cr2O3 Effect

Abstract

Lubricated pin-on-disk sliding wear tests were performed on applied to Al-0.1Mg-0.35Ni-Si Alloy by using the spray coating method has been investigated. Different loads were 5, 10, and 15 N at a sliding velocity, 1.32 m/s at room temperature and 60% relative humidity. The surfaces were analyzed by using X-ray diffraction the residual (XRD), energy dispersive (EDS), scanning of (SEM) and (AFM), respectively. The results have showed that the thickness of Cr 2 O 3 coating was significantly related under the identical cold spray condition. These methods have contributed much of the understanding of quality and properties of surfaces. The (Cr 2 O 3 ) coating has great potential as a wear-resistant. The hardness increased from 102 ± 5 HV to 116.4 ± 2.5 HV at coating thickness 45 µm and friction coefficient reduced from 0.29 to 0.24; and the wear rate was about 2.11X10 -13 m 3 N -1 m -1 while hardness was increased from 102 ± 5 HV to 108 ± 3.5 HV at coating thickness 15 µm. The friction reduced from 0.31 to 0.29 at same coating thickness alloys, and the wear rate was about 2.73X10 -13 m 3 N -1 m -1 . The tribological properties of Cr 2 O 3 coating have exhibited low friction and beneficial to improve the adhesion which was clear on worn surfaces of Cr 2 O 3 coating. Crack, powder flocculation and powder formation are caused by the wear mode of the surface. Brittle fracture was found; while, adhesion and oxidation are the main mechanism of wear during the test.

TRIBOLOGICAL PROPERTIES OF AL2O3-ZrO2 COMPOSITE COATING BY LUBRICATION

“…Lee Van performed erosion studies on types of ZTA covered iron matrix compounds and observed a 30-volt compound. Percent of ZTA particles confirmed the great resistance during put on test [18]. Friction and put on analyzes have been carried out on the Fe-Ni alloy matrix (Fe70Ni30).…”

Effect of interlayer design on friction and wear behaviors of CrAlSiN coating under high load in seawater

“…The high surface roughness will cause a reduction of the actual contact area between the counterpart and coating, which leads to a high load concentrated in a small area and ultimately enhances the coefficient of friction. 41 The lowest COF value of 0.107 AE 0.009 took place on Cr/CrN/CrAlSiN specimen during the friction test. Not only because the surface roughness of Cr/CrN/CrAlSiN sample was lowest, but also because the tribochemical products were formed on the contact interface.…”