Processing of alumina-based composites via conventional sintering and their characterization

Verma, Vikas; Kumar, B. Venkata Manoj

doi:10.1080/10426914.2016.1198023

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…There has been increasing interest in composites and many researchers contributing their work in the area of wear analysis of aluminium composites, cermets, ceramics [30][31][32][33][34][35][36][37][38][39][40]. Umanath et al [30], examined the effect of SiC and Al 2 O 3 on dry sliding wear behaviour of Al6061 hybrid composites prepared by stir casting method, results showed that with increase in the volume content, wear decreases due to the presence of hard oxide particles.…”

Section: Wear Behaviour Of Aluminium-based Metal Matrix Compositesmentioning

confidence: 99%

A Short Review on Al MMC with Reinforcement Addition Effect on Their Mechanical and Wear Behaviour

Verma¹,

Хван²

2019

Advances in Composite Materials Development

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Advanced mechanical and wear properties and applications of composites with bases of light weight metals have led to the need of aluminium (Al) metal matrix composites (MMCs). In today's time aluminium (Al) metal matrix composites (MMCs) are considered the most potential material for structural and functional applications. Composite materials with aluminium matrices are used in defence, aerospace, automotive and aviation, thermal management areas. Beneficial properties with reduced prices have enlarged their applications. To obtain desired physical and mechanical properties like high hardness, high strength, high stiffness, high wear, abrasion and corrosion resistance Al is reinforced with different metallic, non-metallic and ceramic elements. Al MMCs are used to make piston, connecting rod, engine cylinders, disc and drum brakes where wear has a great role in the functioning of these components as excessive wear of the mating components sometimes leads to catastrophic failures. Improvement of mechanical, especially tribological properties of hybrid composites were provided by the use of certain reinforce materials such as SiC, Al 2 O 3 and graphite. Hence the present chapter presents a review on aluminium metal matrix composites (MMCs) reinforced with different particulate, whisker, fibres reinforcements highlighting their effect on physical, mechanical and wear behaviour of Al MMCs.

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Section: Wear Behaviour Of Aluminium-based Metal Matrix Compositesmentioning

confidence: 99%

A Short Review on Al MMC with Reinforcement Addition Effect on Their Mechanical and Wear Behaviour

Verma¹,

Хван²

2019

Advances in Composite Materials Development

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Section: Wear Behaviour Of Aluminium-based Metal Matrix Compositesmentioning

confidence: 99%

“…Chapter is partially based on the results of earlier published works [35][36][37], and authors have the permission to re-use it.…”

Section: Acknowledgementsmentioning

confidence: 99%

Advances in Composite Materials Development

Lucan¹

2019

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Biocompatible composites obtained using the magnetron sputtering for the production of minimally invasive implantation medical devices (stents) were investigated. Nano-and microdimensional surface layers of Ta, Ti, Ag, and Cu on flat and wire NiTi, Cu, Ti, and SiO 2 substrates were created. The phase composition, surface morphology, and the layer-by-layer composition were investigated on an X-ray diffractometer, SEM, and Auger spectrometer. It was shown that the thickness and the structure of surface layers were affected by the sputtering distance, time, power, and the bias voltage at the substrate. The presence of the transition layer that contains both substrate and target elements and provides high adhesion of the surface layer to the substrate has been demonstrated. The material was tested for corrosion resistance under static conditions by dipping into solutions with various acidities (pH from 1.68 to 9.18) for 2 years, static mechanical properties, and biocompatibility in vitro and in vivo. A slight corrosive dissolution was observed only in a medium with a pH of 1.56. Dissolution in the other media is absent. An increase in strength and plasticity in comparison with substrate was attained depending on the nature of the sputtered substance and substrate. Toxicity of samples has not been revealed.

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“…To obtain desired properties, Al is reinforced with varying percentage of different metallic and ceramic reinforcements having limitations of poor wettability between matrix and reinforcements and their instability at higher temperature [10][11][12][13][14]. With time, different processing routes were studied and liquid metallurgy technique was found suitable for processing large size components [15][16][17][18][19]. Stir casting technique is generally preferred because of its simplicity, cost-effectiveness and applicability for mass production.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and tribological behavior of Al composites containing varying beryllium aluminum silicate and constant CeO2

et al. 2021

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The main aim of the present work is to see the performance of “Al–Beryl” composites processed via stir casting route with or without CeO2 on their mechanical, wear and corrosive properties for structural applications in heavy machinery and watercrafts. Hardness and ultimate tensile strength increased with 36% and 43%, respectively, with 9% Beryl addition. Further, effect of addition of constant 0.5 wt.% CeO2 in “Al–Beryl” composite was evaluated and remarkably improvement in corrosion resistance was observed. Tribological performance of the composites was investigated by conducting sliding wear tests against steel at different loads in dry and wet conditions. Characteristic features of adhesion, fracture and delamination were observed in SEM micrograph of the worn composite having low beryl content slid in air whereas abrasive wear predominates in water or oil. Addition of increased wt.% of beryl particles led in reduced wear of the composite at all loads. Increase in corrosion resistance by 45% decrease in weight loss with 0.5% CeO2 addition was observed. “Al6061–9% Beryl–0.5% CeO2” composite with high hardness, wear and corrosion resistance is found most promising for structural applications. Article Highlights An increase of 36% in hardness and 43% in ultimate tensile strength was found in Al composites with 9% Beryl addition; Coefficient of friction was found least for “Beryl–CeO2” added composites in wet sliding conditions; A transition in wear mechanism occurred with adhesion, fracture and delamination of the worn composite with low beryl content slid in air; Corrosion resistance increased by 45% with 0.5% CeO2 addition in Al composites.

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Processing of alumina-based composites via conventional sintering and their characterization

Cited by 15 publications

References 32 publications

A Short Review on Al MMC with Reinforcement Addition Effect on Their Mechanical and Wear Behaviour

A Short Review on Al MMC with Reinforcement Addition Effect on Their Mechanical and Wear Behaviour

Advances in Composite Materials Development

Mechanical and tribological behavior of Al composites containing varying beryllium aluminum silicate and constant CeO2

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