Study on mechanical and micro-structural properties of aluminium matrix composite reinforced with graphite and granite fillers

Bhanuprakash, Lokasani; Thejasree, P.; John, Finu; Prabha, R. Mercy Russelin

doi:10.1016/j.matpr.2023.06.243

Cited by 19 publications

(3 citation statements)

References 9 publications

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“…Therefore, L20 exhibits the highest tensile strength and strain. [55][56][57] 2.6 | Electromagnetic interference shielding properties of composites Electrical conductivity is crucial in EMI shielding performance due to its intrinsic ability to effectively reflect electromagnetic waves. Figure 7A shows the electrical conductivity of the LMMX/EG/PAA composites L10, L15, and L20, and the composites without LM groups X10, X15, and X20.…”

Section: Mechanical Properties Of Compositesmentioning

confidence: 99%

Highly thermally conductive and EMI shielding composite fabricated via free‐radical polymerization of poly acrylic acid assisted by expanded graphite with liquid metal‐grafted MXene

Cho,

Kim

2024

Polymer Composites

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Polymer composites offer numerous benefits, including low cost, easy processability, and diverse applications. In this work, we fabricated a composite material with high thermal conductivity and electromagnetic interference (EMI) shielding performance using EGaIn, a liquid metal (referred to as LM in this paper), MXene (MX), and expanded graphite (EG) as multifunctional fillers, along with polyacrylic acid (PAA). LM was used to exfoliate MX under the effect of shear force, which not only reduced the size of MX but also increased the aspect ratio of the 2D‐structured MX. MX was filled into the pores of EG to make a heat transfer path, thereby enhancing its thermal conductivity, mechanical properties, and EMI SE properties. LM served as the initiator of free‐radical polymerization to convert acrylic acid (AA) into PAA. Finally, the LMMX/EG/PAA composite was hot‐pressed to make the heat‐transfer path dense. As a result, the LMMX/EG/PAA composite exhibited a thermal conductivity of 1.88 W/m·K and an EMI shielding effect of 52 dB.

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Section: Mechanical Properties Of Compositesmentioning

confidence: 99%

Highly thermally conductive and EMI shielding composite fabricated via free‐radical polymerization of poly acrylic acid assisted by expanded graphite with liquid metal‐grafted MXene

Cho,

Kim

2024

Polymer Composites

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“…In the dynamic landscape of materials science, the continual pursuit of advanced materials exhibiting exceptional mechanical properties and heightened resistance to corrosion is a cornerstone of innovation. This important motivation is highlighted by the ever-growing range of applications in aerospace [1,2], automotive [3], and structural engineering [4], where materials must meet high standards of performance and durability [5]. Against this backdrop, the integration of sustainable additives has emerged as an essential area of exploration, reflecting a global commitment to environmentally aware engineering solutions.…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Mechanical Strength and Corrosion Resistance of Aluminum Matrix Composites throughBiochar Reinforcement at Varied Weight Percentages

Alnaser

2024

Preprint

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This study introduces an innovative approach to fabricate aluminum matrix composites strengthened with biochar, derived from renewable biomass sources. A systematic investigation of varying biochar weight percentages (0, 2.5, 5, 7.5, and 10 wt%) reveals substantial improvements in mechanical properties and corrosion resistance. Mechanical assessments, including compressive strength and hardness, demonstrate a significant enhancement in mechanical strength with biochar incorporation. In this study, it was discovered that the composite with 7.5 wt% biochar exhibits an optimal balance, displaying an 8.83% increase in compressive strength and a 15.15% rise in hardness compared to the base aluminum matrix. The study further evaluates corrosion behavior through electrochemical analyses and immersion tests in 3.5% NaCl corrosive environments, highlighting the superior corrosion resistance of biochar-reinforced composites. Corrosion rates decrease by 73% in the composite with 10 wt% biochar for the 24hrs immersion time, affirming its protective barrier against corrosive agents. This research provides quantitative insights into tailoring mechanical and corrosion properties in aluminum matrix composites through biochar reinforcement, offering a promising avenue for sustainable material development. The resulting materials exhibit not only an 8.83% increase in mechanical strength but also a 73% reduction in corrosion rates, offering valuable uses in industries that need strong, eco-friendly solutions.

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“…Nevertheless, certain materials' limited hardness and wear resistance may restrict their applicability in some contexts [1,2]. Integrating ceramic nanoparticles, such as VC, BN, SiC, GNP, BC, etc., into aluminum alloys through friction stir processing has significantly impacted the resulting composites' mechanical and thermal properties [3][4][5][6][7]. The utilization of ceramic reinforcements in AA6061 by Friction Stir Processing (FSP) has substantially improved its characteristics.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Investigation of BN and VC Reinforcements on the Properties of FSP AA6061 Composites

Moustafa,

Djouider,

Alhawsawi

et al. 2023

Lubricants

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This present study investigated the impact of incorporating boron nitride (BN) and vanadium carbide (VC) reinforcements on various properties of friction stir processed (FSP) AA6061 alloy composites, focusing specifically on grain structure, thermal conductivity, electrical conductivity, and compressive strength. The findings indicate that VC more effectively refines the grain structure of the AA6061 alloy during FSP compared to BN. The inclusion of BN particles in the metal matrix composites resulted in a decrease in both thermal and electrical conductivity. In contrast, the addition of VC particles led to an increase in both thermal and electrical conductivity. The AA6061/VC composite material exhibited the highest thermal conductivity among all composites tested. The electrical conductivity of the hybrid-composite AA6061/30%BN+70%VC showed a slight reduction, measuring only 2.8% lower than the base alloy AA6061. The mono-composite AA6061/VC exhibited a marginal decrease in thermal conductivity, with a measured value only 7.5% lower than the conventional alloy AA6061. However, the mono-composite AA6061/BN displayed a more significant decline, exhibiting a loss of 14.7% and 13.9% in electrical and thermal conductivity, respectively. The composite material comprising 30% BN and 70% VC reinforcement demonstrated the highest compressive strength compared to all other tested composites. The observed percentage enhancement in the mechanical properties of mono and hybrid composites, compared to the parent AA6061 alloy, ranged from 17.1% to 31.5%.

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Study on mechanical and micro-structural properties of aluminium matrix composite reinforced with graphite and granite fillers

Cited by 19 publications

References 9 publications

Highly thermally conductive and EMI shielding composite fabricated via free‐radical polymerization of poly acrylic acid assisted by expanded graphite with liquid metal‐grafted MXene

Highly thermally conductive and EMI shielding composite fabricated via free‐radical polymerization of poly acrylic acid assisted by expanded graphite with liquid metal‐grafted MXene

Tailoring the Mechanical Strength and Corrosion Resistance of Aluminum Matrix Composites throughBiochar Reinforcement at Varied Weight Percentages

A Comprehensive Investigation of BN and VC Reinforcements on the Properties of FSP AA6061 Composites

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