Investigation on the Fretting Wear of a Coated Substrate with Interlayer

Mohd Tobi, Abdul Latif; Harimon, M.A.; Saad, A.A.; Karim, R.M.

doi:10.4028/www.scientific.net/AMM.315.909

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HomeApplied Mechanics and MaterialsMechanical & Manufacturing EngineeringInvestigation on the Fretting Wear of a Coated...

Investigation on the Fretting Wear of a Coated Substrate with Interlayer

Abstract:

The fretting wear of coated SCMV (high-strength alloy steel) substrate with interlayer is studied with the focus on stresses associated with the coating failure under gross sliding condition. The analysis is simulated using finite element based method for a given number of cycles of worn half cylinder-on-flat geometry. The effect of interlayer stiffness on the stress distributions in the coating is studied. The maximum tensile stress at the trailing edge and the maximum compressive stress at the leading edge are reducing with increasing interlayer stiffness. The maximum shear stress at the coating-interlayer interface is predicted to have negligible effect with the change of interlayer stiffness. All the stresses are generally predicted to reduce with cycle. In general, stiffer interlayer will reduce the risk of coating failure.

Info:

Periodical:

Applied Mechanics and Materials (Volume 315)

Main Theme:

Mechanical & Manufacturing Engineering

Edited by:

A.E. Ismail, A.J. Alimin, A.L. Mohd Tobi, A. Khalid, H.Z. Abdullah, I. Masood, M.H.I. Ibrahim, M. K. Mohd Noor, M.S. Yusof, S. Jamian, S. Salleh, W.A. Siswanto and W.N.A. Wan Muhammad

Pages:

909-913

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.315.909

Citation:

A. L. Mohd Tobi et al., "Investigation on the Fretting Wear of a Coated Substrate with Interlayer", Applied Mechanics and Materials, Vol. 315, pp. 909-913, 2013

Online since:

April 2013

Authors:

Abdul Latif Mohd Tobi, M.A. Harimon, A.A. Saad, R.M. Karim

Keywords:

Coating, Finite Element Method (FEM), Fretting Wear, Gross Sliding, Interlayer

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References

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Paper TitlePages

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1330

The Influence of Chemical Alloying on the High Temperature Wear Resistance of H-Free DLC Coatings

Authors: Damiano Galvan, Y.T. Pei, Jeff T.M. de Hosson, Albano Cavaleiro

Abstract: A commercial RF-sputtering deposition rig was employed to deposit H-free diamond-like carbon (DLC) coatings. The influence of alloying elements such as Ti and Si on the structure, mechanical and tribological properties of the coatings was investigated. The coating was observed in cross section and in plan view with SEM, TEM and AFM. Because of the highly-ionized plasma generated by the RF-powered glow discharge, ion bombardment suppresses the formation of a columnar structure regardless of the composition of the coatings. The method produces featureless microstructures and smooth surfaces. TEM investigations confirm that no crystalline phases form in the coatings regardless of the presence of considerable concentrations of Ti and Si. Tribological tests were performed with a high-temperature tribometer in a ball-on-disk configuration, using coated disks and different materials for the ball countepart. At ambient T the sliding friction coefficient decreases as the concentration of alloying elements increases. Nevertheless, high-T tribotests with a constant thermal load showed that the presence of alloying elements decreases the thermal stability of the coatings. For each coating a temperature exists above which a sudden increase of friction coefficient is observed, with subsequent detachment and failure of the coatings. The mechanism of disruption of the self-lubrication effects is identified and the influence of the alloying elements on the thermal degradation of tribological performance of the coatings is discussed.

1026

Interface Performance Analyses of Electrodeposited Nickel Coating on ABAQUS

Authors: Xia Chun Huang, Han Yu Wang, Li Qun Zhou

Abstract: In this paper, ABAQUS was used to simulate the stamping process for electrodeposited nickel coating. In the simulation, a built-in cohesive zone model of ABAQUS was used to present electrodeposited nickel coating steel‘s interface performance. The computational results shows that, at the interface, the normal stress was between -113.765～3MPa，and the maximum tangential stress is 50 MPa. The maximum interface stress is at the die fillet during the process of stamping，and we analyze the case of delaminating and is used to assess the influence of the blank holder force，the clearance between the punch and the die and the tool radii. This method can be used as guidance for battery shell’s forming manufacture.

143

Mechanical Properties of AlCrTiSiN Coatings Developed by Cathodic Arc for Protection Applications

Authors: Nurot Panich, Surasak Surinphong, D.A. Karpov, Yong Kwang Tan, Chin Foo Goh, Jan Ma

Abstract: The aim of this work is to fabricate and develop the innovative ceramic coatings for protection applications with both high hardness and coating adhesion particularly performing in extremely environmental conditions. In this study, nanocomposite AlCrTiSiN coatings were developed and deposited on Carbide coupons (WC with Co binder) substrate using Cathodic Arc Deposition techniques. The resultant coatings were evaluated with respect to fundamental mechanical properties such as hardness, modulus and coating adhesion. It was found that the nanomposite AlCrTiSiN coatings has a good adhesion to the substrate and retained extremely high hardness as superhard coatings with hardness values above 50 GPa.

Fretting Fatigue on Thin Sheets

Authors: Eduardo Luis Gaertner, José Divo Bressan, Anne Karollyne Petry

Abstract: The fretting is responsible for many failures of components in the industry. It is present in assemblies like rivet and screw fixture, dovetailjoint, shaft and hub with key, and all connections of two bodies with a contact force and a small induced relative displacement. Topic of studies for decades, the researchers perform experimental tests with some simplification in order to accelerate the phenomenon, some times using standard devices or creating dedicated machines for better representing the behavior of the desired components. There are a few studies with thin sheets, in which the fretting fatigue has more impact because a small reduction of the cross section due to the wear of crack results in a significant increase of stress and rate of crack propatation, decresing the number of cycles until failure. In this work, it wasbuild a device to generate the fretting fatigue with two different shape of contact pad. The specimen is a stainless steel sheet thickness 0.152mm, which fractures and surfaces were analyzed using the SEM and white light interferometer to understand the fractures.

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