Friction characteristics of hybrid magnesium alloy composites reinforced with carbon nanotube and cerium

Sari, Fatma; Karamış, Mehmet; Kaya, Yahya

doi:10.1108/ilt-12-2015-0201

Cited by 8 publications

(7 citation statements)

References 10 publications

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“…The hardness of a processed composite specimen was investigated using Vickers' micro hardness tester. The wear test was conducted using pinon-disc friction and wear testing machine, which is simple, accurate and widely used by many researchers (Ayyappadas et al, 2017;Mojumder et al, 2017;Mat Tahir et al, 2017;Sari et al, 2017;Gladston et al, 2017). In total, 12 samples were prepared from the processed composite, and the dimensions were 4 Â 4 Â 50 mm, respectively.…”

Section: Methodsmentioning

confidence: 99%

Tribological behaviour and wear fashion of processed AA6061/ZrO₂ composite

James

Annamalai

2018

ILT

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Purpose This study aims to develop a less weight high wear resistant material to fabricate brake components especially in automotive sector. Design/methodology/approach Effort was initiated to design and develop aluminium metal matrix composite by combining aluminium alloy AA6061 and zirconium oxide (ZrO2) with the help of stir casting coupled with squeeze casting unit. Morphology analysis of advanced composite has been carried out by optical microscopy and scanning electron microscopy (SEM). The hardness of composites having different compositions was tested using Vickers micro hardness tester. The tribological property of the developed three specimens having different composition has been tested using pin-on-disc wear test equipment under dry sliding conditions. To obtain better understanding of wear mechanism, SEM image of worn-out surface was captured and analysed. SEM images and the corresponding Energy-dispersive X-ray spectroscopy (EDX) on the wear surface were carried out. Findings The optical and SEM images evidenced the existence of ZrO2 particles along the metal matrix composite. Porosity values shows that the porosity level is acceptable as it falls below 7 per cent. Also, the finding proves that increase in the percentage of reinforcement particle instigates agglomeration on the AA6061 composites. Hardness test demonstrated that the inclusion of hard ZrO2 particles leads to substantial improvement in hardness and the hardness value started deteriorating when the composition reaches 15 per cent. The wear test results substantiated the enhancement of tribological property due to the inclusion of distinct ZrO2 particles. Also, despite of addition of reinforcements, the wear rate increased when the load increases. SEM images proved that AA6061/ZrO2-5 per cent composite fashioned steady-state mild and smooth wear. EDX spectrum analysis revealed the existence of ZrO2 particles along with wear debris, which caused wear of 685 µm in AA6061/ZrO2-15 per cent composite. Originality/value The developed material possesses low wear rate which is the unique property of composite and frictional force which is directly proportional to load but the coefficient of friction remains apparently constant. As a whole, investigations on developed composites introduce a new material which is suitable for manufacturing of brake components for automobile industry.

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Section: Methodsmentioning

confidence: 99%

Tribological behaviour and wear fashion of processed AA6061/ZrO₂ composite

James

Annamalai

2018

ILT

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“…Figure 6 (a) shows the EDS analysis of the worn surface of RZ5/4 wt.% TiB 2 magnesium matrix composites for an applied load of 10 N and a sliding distance of 2000 m. The EDS analysis indicates the elements of magnesium RZ5 alloy (Mg-Zn-Zr-RE) and TiB 2 along with some oxide peaks. In the EDS analysis of wear debris shown in Figure 6 (b), it can be observed that wear debris got oxidized during the wear test, and the size of the wear debris formed is around (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) µm.…”

Section: Micrograph Of Worn Surface and Wear Debrismentioning

confidence: 99%

“…Different wear mechanisms were observed at different sliding speeds during wear, and at the lower sliding speed, the oxide layer was deposited on the contact surface and protected from wear. 15 Many researchers have investigated the tribological behaviour of different alloys and their composites experimentally with varying wear parameters. However, it is challenging to perform the experiments at all operating conditions.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the abrasive wear behavior of in-situ synthesized magnesium RZ5/TiB₂ metal matrix composites

Meher

Mahapatra

Samal

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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In the present study, the statistical analysis on tribological behavior of RZ5/TiB2 magnesium-based metal matrix composites is carried out using Taguchi design and analysis of variance (ANOVA) technique. Taguchi analysis using signal-to-noise ratio indicates that the sliding distance and wt.% TiB2 are the most significant factors in evaluating weight loss and coefficient of friction, respectively. The regression equation is formulated utilizing the ANOVA technique to study the output responses based on the input abrasive wear test experimental results. The regression equation is validated through a comprehensive study taking a series of abrasive wear tests and indicates the percentage deviation of regression modeling is in the range of ± 10%. The individual and combined effect of wear parameters on tribological behavior are investigated through the main effect plots and response surface plots. The micrograph of the worn surface of RZ5/TiB2 composites is studied using field emission scanning electron microscope (FESEM), indicating the formation of an oxide layer on the worn surface.

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“…Magnesium alloys are promising structural materials in many industrial applications (Sari et al , 2017). One of the major advantages for today’s technology is that magnesium can be easily recycled (Huang et al , 2006).…”

Section: Introductionmentioning

confidence: 99%

Preparation and tribological properties of a microemulsion for magnesium alloy warm rolling

Dong

Sun

Cheng

et al. 2019

ILT

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Purpose The purpose of this paper is to synthesize a microemulsion and investigate its tribological properties as lubricant. Magnesium alloy warm rolling experiments were conducted. Surface morphology was observed and wear form was summarized. The composition of surface residues was analyzed, which sheds light on the lubrication mechanism of microemulsion. Design/methodology/approach A microemulsion was prepared with a proper amount of oil, surfactant, cosurfactant, water and other additives for magnesium alloy strip warm rolling. Tribological properties, such as maximum non-seizure load (PB), friction coefficient (μ) and wear scar diameter (D) of the microemulsion were measured and compared with those of emulsion and rolling oil on an MR-10A four-ball tribotester. The extreme pressure anti-wear coefficients (O) were calculated and compared. Warm rolling experiments were carried out on a Ф 170/400 × 300 mm four-high rolling mill at 240°C to compare the finish rolling thickness and surface quality of rolled AZ31B magnesium alloy strip under four lubrication states, namely, no lubrication, rolling oil, microemulsion and emulsion. The surface morphology after warm rolling was observed with confocal laser scanning microscope and scanning electron microscope, respectively. The composition of surface residues was analyzed with energy dispersive spectrometry and X-Ray photoelectron spectroscopy. Findings Surface morphology indicated that pitting wear, adhesive wear and ploughing wear were three main forms of wear in magnesium alloy warm rolling. Microemulsion had excellent lubrication properties with less residual oil remaining. Two types of adsorption layers formed on magnesium alloy strip surface were responsible for lubrication properties. MgSO4 and magnesium stearate in the reaction layer played a key role in anti-wear and friction-reduction in warm rolling. Originality/value The study is original and gives valuable information on lubrication mechanism of microemulsion in warm rolling of magnesium alloy strips.

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Friction characteristics of hybrid magnesium alloy composites reinforced with carbon nanotube and cerium

Cited by 8 publications

References 10 publications

Tribological behaviour and wear fashion of processed AA6061/ZrO₂ composite

Tribological behaviour and wear fashion of processed AA6061/ZrO₂ composite

Modeling the abrasive wear behavior of in-situ synthesized magnesium RZ5/TiB₂ metal matrix composites

Preparation and tribological properties of a microemulsion for magnesium alloy warm rolling

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Friction characteristics of hybrid magnesium alloy composites reinforced with carbon nanotube and cerium

Cited by 8 publications

References 10 publications

Tribological behaviour and wear fashion of processed AA6061/ZrO2 composite

Tribological behaviour and wear fashion of processed AA6061/ZrO2 composite

Modeling the abrasive wear behavior of in-situ synthesized magnesium RZ5/TiB2 metal matrix composites

Preparation and tribological properties of a microemulsion for magnesium alloy warm rolling

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Product

Resources

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Tribological behaviour and wear fashion of processed AA6061/ZrO₂ composite

Tribological behaviour and wear fashion of processed AA6061/ZrO₂ composite

Modeling the abrasive wear behavior of in-situ synthesized magnesium RZ5/TiB₂ metal matrix composites