Effect of graphene nano-platelet reinforcement on the mechanical properties of hot pressed boron carbide based composite

Alexander, Rajath; Murthy, T.S.R.Ch.; Ravikanth, K.V.; Prakash, Jyoti; Mahata, T.; Bakshi, Srinivasa Rao; Krishnan, Madangopal; Dasgupta, Kinshuk

doi:10.1016/j.ceramint.2018.02.225

Cited by 45 publications

(12 citation statements)

References 44 publications

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“…Although the reported fracture toughness values of graphene/ceramic composites were measured by different testing methods, the results definitely prove that graphene can effectively toughen the ceramic matrix. The fracture toughness of 10 vol% GNP/B 4 C increased to 4.52 MPa•m 1/2 (83%) compared with 2.47 MPa•m 1/2 of monolithic B 4 C [48]. Additionally, in the Al 2 O 3 matrix, the addition of only 2.5 vol% rGO led to the high fracture toughness of 5.9 MPa•m 1/2 , with 90% improvement [79].…”

Section: Mechanical Properties and Applicationsmentioning

confidence: 95%

“…Powder processing typically refers to the simple process of mixing graphene sheets and ceramic powders by ball milling with a dispersion agent such as ethanol [13,47] and isopropanol [48,49]. A typical procedure is illustrated in Fig.…”

Section: Processing Technologies Of the Composite Powdermentioning

confidence: 99%

“…In some cases [77,86,87], crack propagation changed from the intergranular mode to the transgranular mode, because graphene located in a grain boundary weakened the grain boundary. Tough ceramics have wide applications in ballistic armors [48], cutting tools [15], wear and corrosion resistance coatings [100], and aerospace applications [101]. For instance, compared with commercial B 4 C ceramic armors, the penetration depth of a bullet decreased by 40%, and the protective coefficient reached 3.6 in the 1.5 wt% graphene/B 4 C composites [18], demonstrating enormous potential in ballistic resistance applications.…”

Section: Mechanical Properties and Applicationsmentioning

confidence: 99%

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Controllable fabrication and multifunctional applications of graphene/ceramic composites

Huang¹,

Wan²

2020

J Adv Ceram

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Graphene with excellent comprehensive properties has been considered as a promising filler to reinforce ceramics. While numerous studies have been devoted to the improvement of mechanical and electrical properties, incorporating graphene to ceramics also offers new opportunities for endowing ceramics with versatility. In this review, the recent development of graphene/ceramic bulk composites is summarized with the focus on the construction of well-designed architecture and the realization of multifunctional applications. The processing technologies of the composites are systematically summarized towards homogeneous dispersion and even ordered orientation of graphene sheets in the ceramic matrix. The improvement of composites in mechanical, electrical, electromagnetic, and thermal performances is discussed. The novel multifunctional applications brought by smart integration of graphene in ceramics are also addressed, including microwave absorption, electromagnetic interference shielding, ballistic armors, self-monitor damage sensors, and energy storage and conversion.

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Section: Mechanical Properties and Applicationsmentioning

confidence: 95%

Section: Processing Technologies Of the Composite Powdermentioning

confidence: 99%

Section: Mechanical Properties and Applicationsmentioning

confidence: 99%

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Controllable fabrication and multifunctional applications of graphene/ceramic composites

Huang¹,

Wan²

2020

J Adv Ceram

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“…When the matrix was the same, with the increase of BNNTs content, the hardness of the ceramic composite material gradually decreased. The reason may be as the content of BNNTs continued to increase, the possibility of nanotube agglomeration became higher, and the defects and matrix pores introduced by agglomerations will increase, which will reduced the continuity and density of the ceramic matrix, which will eventually lead to the hardness of the ceramic material decreases [21].…”

Section: Preparation Of Bnnts/b 4 C Composite Ceramicsmentioning

confidence: 99%

Fabrication and Mechanical Properties of Boron Nitride Nanotube Reinforced Boron Carbide Ceramics

Liu

et al. 2020

Preprint

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A series of BNNTs/B4C composite ceramic were prepared by the spark plasma sintering (SPS) technology using boron carbide (B4C) powders as the matrix and boron nitride nanotubes (BNNTs) as the toughening phase. The XRD, SEM, TEM and HR-TEM were used to characterize the B4C samples. The influence of sintering temperature, BNNTs content and matrix particle size on the microstructures and mechanical properties of B4C composite ceramics, as well the toughening mechanism were investigated in detail. The experimental results showed that changing the particle size of the powder, increasing the sintering temperature and adding BNNTs could significantly improve the mechanical properties of the material. The ceramic samples obtained by adding 5wt.% BNNTs content sintered at 1750℃ displayed the best mechanical properties. Its relative density, microhardness and fracture toughness respectively were 99.41%, 32.68 GPa and 6.87 Mpa·m1/2, respectively. In particular, the fracture toughness value of the BNNTs/B4C composite ceramic was 54.59% higher than that of B4C ceramics without BNNTs.

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“…The study by Yin et al [ 18 ] showed that the network structure formed by graphene in the ceramic matrix can enhance the interface bonding, leading to more crack bridging and deflection. At present, the macro toughening mechanisms of graphene have been mostly studied, such as crack deflection, graphene pull-out, and graphene fracture [ 19 , 20 , 21 ], while the micro and nano interface toughening mechanism of graphene is seldom studied. The graphene characteristic size [ 22 ], interface structure [ 23 ], and interface bonding strength [ 24 ] play an important role in improving the mechanical properties of graphene toughened ceramic materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Characteristic Size and Content of Graphene on the Crack Propagation Path of Alumina/Graphene Composite Ceramics

Chen

Xiao

et al. 2021

Materials

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In this paper, the Voronoimosaic model and the cohesive element method were used to simulate crack propagation in the microstructure of alumina/graphene composite ceramic tool materials. The effects of graphene characteristic size and volume content on the crack propagation behavior of microstructure model of alumina/graphene composite ceramics under different interfacial bonding strength were studied. When the phase interface is weak, the average energy release rate is the highest as the short diameter of graphene is 10–50 nm and the long diameter is 1600–2000 nm. When the phase interface is strong, the average energy release rate is the highest as the short diameter of graphene is 50–100 nm and the long diameter is 800–1200 nm. When the volume content of graphene is 0.50 vol.%, the average energy release rate reaches the maximum. When the velocity load is 0.005 m s−1, the simulation result is convergent. It is proven that the simulation results are in good agreement with the experimental phenomena.

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Effect of graphene nano-platelet reinforcement on the mechanical properties of hot pressed boron carbide based composite

Cited by 45 publications

References 44 publications

Controllable fabrication and multifunctional applications of graphene/ceramic composites

Controllable fabrication and multifunctional applications of graphene/ceramic composites

Fabrication and Mechanical Properties of Boron Nitride Nanotube Reinforced Boron Carbide Ceramics

Effect of the Characteristic Size and Content of Graphene on the Crack Propagation Path of Alumina/Graphene Composite Ceramics

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