Microstructures and properties of graphene-nanoplatelet-reinforced magnesium-matrix composites fabricated by an in situ reaction process

Sun, Xueyu; Li, Chaojie; Dai, Xuefang; Zhao, Liang; Li, Baoe; Wang, Hongshui; Liang, Chunyong; Li, Haipeng; Fan, Jiawei

doi:10.1016/j.jallcom.2020.155125

Cited by 37 publications

(10 citation statements)

References 49 publications

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“…When hybrid composites produced with 50% particle reinforcement are evaluated fabricated by pressure infiltration method, it can be deduced that homogeneous particle distribution is achieved successfully in all graphene ratios. However, as the proportion of graphene in the structure increased, the amount of porosity increased by 5% compared to non-graphene reinforced composites due to the adverse effect of wettability between the reinforcement and the matrix (Table 3) [19][20].…”

Section: Resultsmentioning

confidence: 99%

Corrosion Behavior of Graphene Nanoplatelet-Coated TiB2 Reinforced AZ91 Magnesium Matrix Semi-Ceramic Hybrid Composites

Cevik¹,

Gundogan²,

Incesu³

et al. 2021

Hittite J. Sci. Eng.

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R ecent environmental protection policies focus on the need to reduce the weight of vehicles in order to increase fuel efficiency and reduce the impact of greenhouse gases emission [1]. Magnesium stands out as the structural metal in cases where weight reduction is important for materials used in industry and vehicles [2]. Low density, good strength to weight ratio, better heat dissipation, acceptable damping capacity, machinability, and recyclability make magnesium a much more attractive structural metal compared to steel and aluminum [2][3][4]. Despite all these superior properties, high corrosion rate in aggressive environments, relatively low absolute strength, and elastic modulus when compared to other metallic structural materials are the most important unfavorable properties of magnesium alloys [2,[5][6][7].One way to produce high strength, corrosion-resistant magnesium alloys is the production of Mg-based composites by the addition of reinforcement particles such as ceramics [7]. Reinforcement of Mg matrix composites (MMCs) with suitable ceramic particles such as SiC, TiC, and TiB 2 can exhibit high specific strength and acceptable corrosion resistance when the correct combination of reinforcement and a light metal mat-Article History:

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Section: Resultsmentioning

confidence: 99%

Corrosion Behavior of Graphene Nanoplatelet-Coated TiB2 Reinforced AZ91 Magnesium Matrix Semi-Ceramic Hybrid Composites

Cevik¹,

Gundogan²,

Incesu³

et al. 2021

Hittite J. Sci. Eng.

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“…With the increase in GNPs content, more heterogeneous nucleation substrates were provided, leading to more crystal nuclei of Mg on the GNPs. Hence, the increase in nucleation rate can effectively refine the Mg crystal grains at a given Mg0.2%Mn6.0%Zn matrix (Sun et al, 2020). It implies that GNPs can act as nucleation sites and grain refiners in magnesium-based composites.…”

Section: Microstructure Observationsmentioning

confidence: 99%

The Effect of Graphene Nanoplatelets Content on the Hardness of Mg6%Zn0.2%Mn Composites

Beniamin¹,

Mohamed²,

Yusof³

2023

JST

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The effect of graphene nanoplatelets (GNPs) content on the hardness of magnesium-based composites was studied. A magnesium-based composite, Mg6%Zn0.2%Mn with graphene nanoplatelets (GNPs), was fabricated via powder metallurgy process at room temperature and compressive pressures of 50kN for 20 minutes, which was then sintered at 500°C for 2 hours. It produced significant grain refinement microstructure. The change in microstructure was examined by 3D microscope analysis, and the hardness value was evaluated using the Vickers microhardness apparatus. This study demonstrated the importance of GNPs reinforcement with zinc and manganese for microhardness analysis in the sintered Mg-based GNPs composites. It also portrayed their influence on grain refinement of the microstructure. The hardness results agreed with the microstructure results, proving that the presence of GNPs increases the hardness of the Mg-based composites.

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“…However, their relatively low absolute strength and stiffness limit their further development, which can be overcome by strengthening using reinforcements, including ceramic and metallic fibers, particles, and carbon fibers. [3][4][5][6][7][8][9] Carbon nanotube (CNT) has received broad scientific and industrial attention in the past decades due to its excellent physical and chemical properties such as high elastic modulus, high strength, high thermal conductivity, low density and so on. CNT is a tube-like material that is made up of carbon with a diameter calculating on a nanometer scale.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of carbon nanotube-reinforced magnesium composites with zirconia fabricated by spark plasma sintering

Tsukamoto

2021

Journal of Composite Materials

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This study aims to enhance carbon nanotube (CNT)-reinforced magnesium (Mg) matrix composites fabricated by spark plasma sintering (SPS). Ultrasonic treatment with organic solvent (DMAc) and dispersant (K2CO3) were used for the processes to make each CNT apart. Nano-order ceramic powders of zirconia (ZrO2) were found to be effective to keep uniform dispersion of CNT in Mg matrix. Low melting point metals such as Sn were added to fill voids and cracks in the composites. Post-SPS rolling was also employed aiming to improve the microstructures. The fabricated CNT-reinforced Mg composites were investigated on mechanical properties such as hardness and three-point bending strength to be related to the microstructures.

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Microstructures and properties of graphene-nanoplatelet-reinforced magnesium-matrix composites fabricated by an in situ reaction process

Cited by 37 publications

References 49 publications

Corrosion Behavior of Graphene Nanoplatelet-Coated TiB2 Reinforced AZ91 Magnesium Matrix Semi-Ceramic Hybrid Composites

Corrosion Behavior of Graphene Nanoplatelet-Coated TiB2 Reinforced AZ91 Magnesium Matrix Semi-Ceramic Hybrid Composites

The Effect of Graphene Nanoplatelets Content on the Hardness of Mg6%Zn0.2%Mn Composites

Enhanced mechanical properties of carbon nanotube-reinforced magnesium composites with zirconia fabricated by spark plasma sintering

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