Evaluate the Effects of Various Surface Roughness on the Tribological Characteristics under Dry and Lubricated Conditions for Al-Si Alloy

Al-Samarai, Riyadh A.; Haftirman,; Ahmad, Khairel Rafezi; Al‐Douri, Y.

doi:10.4236/jsemat.2012.23027

Cited by 24 publications

(13 citation statements)

References 10 publications

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“…Although, the exact reason for this variation is unknown, it can be believed that there could be a transition from severe wear to mild wear and then back to severe wear as the sliding speed is increased. More research needs to be made in this direction to understand this variation and exact reason; however, similar trends were also reported by Kozma [22] and Al-Samarai et al [23].…”

Section: Resultssupporting

confidence: 80%

Tribological performance of self-lubricating aluminum matrix nanocomposites: Role of graphene nanoplatelets

Tabandeh-Khorshid

Omrani

Menezes

et al. 2016

Engineering Science and Technology, an International Journal

150

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A B S T R A C TIn the present investigation, aluminum matrix nanocomposites reinforced by graphene nanoplatelets were synthesized by powder metallurgy method. The microstructure of the Al-Graphene nanoplatelets sample was investigated by TEM. The hardness measurements of these samples were investigated using a Rockwell hardness tester. To investigate the tribological behavior of aluminum matrix composites reinforced by graphene nanoplatelets and pure aluminum, pin-on-disk experiments were conducted on the prepared samples. In the experiments, the influence of reinforcement, volume fraction, normal load, and sliding velocity on the tribological performance was investigated. Results showed that the wear rate of Al1wt.% GNP is increased with increasing normal loads. However, the coefficient of friction (COF) of the Al-1wt.% GNP decreased with increasing normal loads. Formation of graphene film on the worn surface of Al-1wt.% GNP sample and morphology of the worn surfaces of aluminum and composite samples were analyzed by Optical Microscope (OM) and Scanning Electron Microscope (SEM). It was found that the graphene nanoplatelets reinforced nano-composites showed superior tribological properties and demonstrated the ability of the self-lubricating nature of the composite during tribological conditions.

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Section: Resultssupporting

confidence: 80%

Tribological performance of self-lubricating aluminum matrix nanocomposites: Role of graphene nanoplatelets

Tabandeh-Khorshid

Omrani

Menezes

et al. 2016

Engineering Science and Technology, an International Journal

150

View full text Add to dashboard Cite

show abstract

“…The reason for this is that the difference between the roughness of the UHMWPE samples is negligible because the three samples are used as machined (no surface treatment). This behavior is consistent considering that the UHMWPE wear is extremely sensitive to the roughness of the counterpart surface [18] that should be as smooth as possible [19].…”

Section: Discussionsupporting

confidence: 85%

Device for in Vitro Wear Analysis of Biomaterials in the Hinged Prosthesis Configuration

et al. 2018

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We have developed a device that, coupled to the tribometer, allows movement simulation of the hinged type knee prosthesis. Two tests were performed using the samples designed and one test without the device using a pin-on-flat configuration. For the first and the third tests, the metallic samples were used as machined while for the second one they were electrolytically polished. The test parameters were running length of 0.663 rad and compression load of 22.35 N. The Hertzian contact stress of 15.93 MPa obtained between the samples designed is close to that for the real prosthesis. The measured volumetric wear revealed the influence of roughness of the counterpart surface on the wear behavior. The device has allowed its coupling to the tribometer without any interference on its functioning thus making a contribution to the scientific investigations related to wear behavior of a couple of different biomaterials.

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“…Although his research is not specific about hip, the authors argue that his research is relevant because it has similarities in MoM contact interactions. Al-Samarai et al concluded that the surface roughness have correlation to specific wear rate (Al-Samarai et al, 2012). This is also supported by the theory of Jin et al (1997) and the experiments of Chan et al (1999) that the surface roughness of MoM can be reduced by increasing lubrication.…”

Section: Discussionmentioning

confidence: 73%

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

et al. 2021

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The wear of hip prosthesis due to applied load and sliding distance during the patient's daily activity cannot be avoided. Wear causes osteolysis or metallosis due to the wear debris produced by the wear process. Several methods were used to reduce wear in metal-on-metal hip prostheses. One of the efforts performed to reduce wear was the differential-hardness concept. Based on the literature, the fine surface roughness of the femoral head are the reason why the hip prosthesis with differential-hardness reduces wear. Besides, the differential-hardness will contribute to the difference of modulus elasticity then influenced the contact stress on the surface contact. According to Archard's wear law, wear on the material pair is affected by contact stress. Therefore, the analysis of contact stress on the hip prosthesis with differential-hardness is important to investigate. The investigation performed by the static contact of two-dimensional axisymmetric with frictionless by using finite element simulation. The simulated models are the alumina vs. alumina, alumina vs. SS316L, CoCr vs. CoCr, CoCr vs. SS316L, and SS316L vs. UHMWPE. The purpose of this study is to determine the contact stress on the surface contact due to differential-hardness of the femoral head and cup. The results of simulations show that the differential-hardness marked by differences in the modulus of elasticity can reduce the contact stress on the surface contact if compare with the similar hardness.

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Evaluate the Effects of Various Surface Roughness on the Tribological Characteristics under Dry and Lubricated Conditions for Al-Si Alloy

Cited by 24 publications

References 10 publications

Tribological performance of self-lubricating aluminum matrix nanocomposites: Role of graphene nanoplatelets

Tribological performance of self-lubricating aluminum matrix nanocomposites: Role of graphene nanoplatelets

Device for in Vitro Wear Analysis of Biomaterials in the Hinged Prosthesis Configuration

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

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