Self-formation of protective oxide films at dry sliding mild steel surfaces under a medium vacuum

In recent years, the engineering implications of carbon nanotubes (CNTs) have progressed enormously due to their versatile characteristics. In particular, the role of CNTs in improving the tribological performances of various engineering materials is well documented in the literature. In this work, an investigation has been conducted to study the tribological behaviour of CNTs filled with glass-reinforced polymer (GFRP) composites in dry sliding, oil-lubricated, and gaseous (argon) environments in comparison to unfilled GFRP composites. The tribological study has been conducted on hardened steel surfaces at different loading conditions. Further, the worn surfaces have been examined for a particular rate of wear. Field-emission scanning electron (FESEM) microscopy was used to observe wear behaviours. The results of this study explicitly demonstrate that adding CNTs to GFRP composites increases wear resistance while lowering friction coefficient in all sliding environments. This has also been due to the beneficial strengthening and self-lubrication properties caused by CNTs on GFRP composites, according to FESEM research.

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Enhancing oxidation resistance of Cu during repeated melting by the in-situ formation of protective oxide films

Materials Letters ◽

10.1016/j.matlet.2020.129234 ◽

2021 ◽

Vol 286 ◽

pp. 129234

Author(s):

Yongli Guo ◽

Hui Cai ◽

Zhe Wang ◽

Xin Wang ◽

Peng Cao ◽

...

Keyword(s):

Oxidation Resistance ◽

Oxide Films ◽

Protective Oxide ◽

In Situ Formation

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The changing topography of corroding mild steel surfaces in seawater

Corrosion Science ◽

10.1016/j.corsci.2006.11.003 ◽

2007 ◽

Vol 49 (5) ◽

pp. 2270-2288 ◽

Cited By ~ 61

Author(s):

Robert Jeffrey ◽

Robert E. Melchers

Keyword(s):

Mild Steel ◽

Steel Surfaces

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THERMODYNAMIC PROPERTIES AND CHARACTERIZATIONS OF CHITOSAN NANO-PARTICLES CORROSION INHIBITION ON THE SURFACE OF MILD STEELIN PEAT WATER MEDIA

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.12.1.936.27-35 ◽

2016 ◽

Vol 12 (1) ◽

pp. 27

Author(s):

Maria Erna ◽

Emriadi Emriadi ◽

Admin Alif ◽

Syukri Arief

Keyword(s):

Thermodynamic Properties ◽

Mild Steel ◽

Corrosion Inhibition ◽

Steel Surface ◽

Complex Compounds ◽

Nano Particles ◽

Water Media ◽

Weight Loss Method ◽

Steel Surfaces ◽

Loss Method

The thermodynamic properties and characterizations of corrosion inhibition of chitosan nano-particles on the surface of mild steel in peat water media had been studied using weight loss method at temperatures of 30 - 50 oC. Steel surfaces were characterized by FT-IR spectra and SEM-EDS morphology photos. The research found that the value of DGo approaching -40 kJmol-1. The negative value of Gibbs free energy shows that the adsorption of inhibitor molecules on the surface of mild steel was achemisorption and it occurred spontaneously. Meanwhile, the values of DHo is also negative confirming that the adsoprtion of inhibitor molecules is an exothermic process. The value of DSo obtained is positive, it indicates hat the inhibitor molecules were adsorbed spontaneously on the mild steel surface. The analysis on mild steel surfaces hows that the nano-particle chitosan was adsorbed on the steel surface to form the complex compounds.

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Simulating Microbiologically Influenced Corrosion by Depositing Extracellular Biopolymers on Mild Steel Surfaces

CORROSION ◽

10.5006/1.3292067 ◽

1996 ◽

Vol 52 (10) ◽

pp. 744-752 ◽

Cited By ~ 27

Author(s):

F. L. Roe ◽

Z. Lewandowski ◽

T. Funk

Keyword(s):

Mild Steel ◽

Microbiologically Influenced Corrosion ◽

Steel Surfaces

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Numerical Prediction of Erosion of Mild Steel Surfaces by Boiler Fly Ash Particles

Volume 1 ◽

10.1115/esda2004-58074 ◽

2004 ◽

Author(s):

John G. Mbabazi ◽

Thomas J. Sheer

Keyword(s):

Fly Ash ◽

Mild Steel ◽

Flue Gas ◽

Gas Flow ◽

Erosive Wear ◽

Test Facility ◽

Experimental Investigations ◽

Power Station ◽

Erosion Rates ◽

Steel Surfaces

Fly ash particles entrained in the flue gas from boiler furnaces in coal-fired power stations can cause serious erosive wear on steel surfaces along the downstream flow path. This paper describes research into fly ash impingement erosion on such surfaces, with particular reference to the heat transfer plates in rotary regenerative air heaters. The effect of the ash particle impact velocity and impact angle on the erosive wear of mild steel surfaces was determined through experimental investigations, using three different power station ash types. The experimental data were used to calibrate a fundamentally-derived model for the prediction of erosion rates. This erosion model was incorporated into a particle-tracking CFD flow simulation of the ash-laden flue gas flow through the complex channels between corrugated air heater plates. The predicted erosion rates were compared with measured erosion rates obtained using a large accelerated-erosion test facility located at a power station. Good agreement was obtained, the predictions generally being within 20 percent of the measured values.

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Stability of oxide films formed on mild steel in turbulent flow conditions of alkaline solutions at elevated temperatures

Corrosion Science ◽

10.1016/s0010-938x(00)00150-5 ◽

2001 ◽

Vol 43 (8) ◽

pp. 1497-1517 ◽

Cited By ~ 14

Author(s):

S Giddey ◽

B Cherry ◽

F Lawson ◽

M Forsyth

Keyword(s):

Turbulent Flow ◽

Mild Steel ◽

Elevated Temperatures ◽

Oxide Films ◽

Alkaline Solutions ◽

Flow Conditions ◽

Turbulent Flow Conditions

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The effect of ceramic tribo-elements on friction and wear of smooth steel surfaces

Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology ◽

10.1177/1350650118780779 ◽

2018 ◽

Vol 233 (3) ◽

pp. 456-465

Author(s):

Andrzej Dzierwa ◽

Pawel Pawlus ◽

Rafal Reizer

Keyword(s):

White Light ◽

Wear Debris ◽

Friction And Wear ◽

Sliding Friction ◽

Wear Volume ◽

Dry Sliding ◽

Pin On Disc ◽

Optical Profilometer ◽

42Crmo4 Steel ◽

Steel Surfaces

The pin-on-disc dry sliding friction and wear experiments have been made on 42CrMo4 steel in contact with Si3N4, SiC, WC, Al2O3, and ZrO2 ceramic balls. The tests were carried out at sliding speeds of 0.16 m/s, 0.24 m/s, and 0.32 m/s. During the tests, the friction force was monitored as a function of time. Discs and balls wear was measured after the tests using a white light interferometer Talysurf CCI Lite and Altisurf 520 optical profilometer with a CL1 confocal probe. To decrease variations in the experimental results, during the tests, wear debris was continuously removed from the disc surfaces. It was found out that with Al2O3 counterpart the wear volume of the steel discs was the largest. However, the largest wear volume of the balls was observed for Si3N4 ceramic balls.

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