Interface controlled micro- and macro- mechanical properties of aluminosilicate fiber reinforced SiC matrix composites

Liu, H.T.; Yang, Lingwei; Han, Seong Woo; Cheng, Haifeng; Mao, Weiguo; Molina-Aldareguía, J.M.

doi:10.1016/j.jeurceramsoc.2016.10.003

Cited by 27 publications

(4 citation statements)

References 27 publications

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“…The fracture surfaces from the scanning electron microscope (SEM) images illustrate that MWCNTs uniformly disperse in the epoxy matrix and hold firmly on the epoxy matrix during deformation due to the strong interactions between MWCNTs and epoxy matrix. The mechanical behavior of the nanocomposite induced by the nanoindentation test at the micro-scale is similar with the tensile test at macro-scale [39]. Thus, the trend of mechanical properties of the nanocomposite related to MWCNTs obtained by the tensile test is close to the nanoindentation test.…”

Section: Tensile Propertiessupporting

confidence: 69%

“…The micro-mechanical properties of the composite constituents are crucial to understand the failure of the composites. Liu et al [39] demonstrated that the micro-pillar spitting method can be used to determine mechanical properties such as hardness and Young's modulus of the constituents of aluminosilicate fiber reinforced SiC matrix composites. CNTs have attracted considerable attention for reinforcement material of epoxy due to their low density and excellent mechanical properties (Young's modulus: 0.5-1 TPa, yield strength: 20-100 GPa).…”

Section: Tensile Propertiesmentioning

confidence: 99%

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Mode II Interfacial Fracture Toughness of Multi-Walled Carbon Nanotubes Reinforced Nanocomposite Film on Aluminum Substrate

Her

Chien

2020

Nanomaterials

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In this investigation, various loadings of multi-walled carbon nanotubes (MWCNTs) ranging from 0.3–1.0 wt % were incorporated into the epoxy to fabricate the nanocomposites. Nanocomposite film with a thickness of 0.2 mm was deposited on an aluminum substrate through a hot-pressing process. Theoretical expression of the model II strain energy release rate for the film/substrate composite structure was derived. End-notched flexure (ENF) tests were performed to characterize the mode II fracture energy of the composite structure. Experimental results indicate that the elastic modulus, ultimate strength, and mode II fracture energy increase as the MWCNT loading in the nanocomposite increases. In the case of nanocomposite film with 1.0 wt % of MWCNTs, the elastic modulus, ultimate strength, and mode II interfacial fracture toughness are increased by 20.6%, 21.1%, and 54.4%, respectively in comparison with neat epoxy. In addition, the dispersion of MWCNTs in the epoxy-based matrix was investigated using scanning electron microscope (SEM). The SEM images depict that MWCNTs are well dispersed leading to the enhancement of the mechanical properties of the nanocomposite.

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Section: Tensile Propertiessupporting

confidence: 69%

Section: Tensile Propertiesmentioning

confidence: 99%

Mode II Interfacial Fracture Toughness of Multi-Walled Carbon Nanotubes Reinforced Nanocomposite Film on Aluminum Substrate

Her

Chien

2020

Nanomaterials

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“…However, preparing the samples was very difficult, which reduced the feasibility of this method. Haitao Liu of the University of National Defense Science and Technology has carried out a lot of research on the interphase bonding strength of composites by using the single fiber jacking method [20][21][22]. In his research, the influence that different kinds of interphases have on the bonding strength of the composites' fiber matrix was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation on PyC interfacial failure mechanism and shear strength of SiC/SiC composites

Niu¹,

Bian²,

Chen³

et al. 2021

Modelling Simul. Mater. Sci. Eng.

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In this paper, a molecular dynamics simulation model was established for SiC/pyrolytic carbon (PyC)/SiC composites manufactured through a chemical vapor phase infiltration (CVI) process based on microscopic observation results to investigate the shear strength and failure mechanism of PyC interphase. The simulation results showed that due to the PyC interphase’s disordered structure, the carbon layer underwent non-planar shear, overlap, flip, and deflection during the shearing process, which increased the shear strength of the composites. In addition, when the strength of the PyC interphase was lower than the bonding strength with a fiber and matrix, failure was caused by the internal breakage of the PyC interphase; when the strength of the PyC interphase was higher than the bonding strength with a fiber or matrix, failure was caused by the debonding of the PyC interphase with a fiber or matrix.

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“…Traditionally, several methods have been used to toughen the shellfish porcelain. Particulate-, whisker-and fibre-reinforced ceramic composites are common ways to lead to crack bridging and deflection upon crack propagation [5,6]. The most commonly used method is to add nanofibres to reinforce the shellfish porcelain [7].…”

Section: Introductionmentioning

confidence: 99%

The sintering kinetics of shellfish porcelain reinforced by sepiolite nanofibres

Lijuan

Wang

et al. 2018

R. Soc. open sci.

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The work investigated the effect of sepiolite nanofibres on mechanical properties and sintering behaviour of shellfish porcelain. Samples of shellfish porcelain reinforced by sepiolite nanofibres were fired in an electric furnace at 1150, 1200 and 1250°C for a period of 80, 100, 120 and 140 min. Sintered samples were characterized by flexural strength, fracture toughness, scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The results showed that 2 wt% sepiolite nanofibres could increase the flexural strength and fracture toughness of the porcelain bodies through the fibre pullout and the weak interface mechanisms. Sintering activation energies were determined according to the linear shrinkage results. It is found that the liquid-phase sintering mechanism of shellfish porcelain with sepiolite nanofibres is a diffusion mechanism. Porcelain without sepiolite is controlled by volume diffusion, and eventually, the grain boundary diffusion began to appear with the increase of sepiolite addition.

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Interface controlled micro- and macro- mechanical properties of aluminosilicate fiber reinforced SiC matrix composites

Cited by 27 publications

References 27 publications

Mode II Interfacial Fracture Toughness of Multi-Walled Carbon Nanotubes Reinforced Nanocomposite Film on Aluminum Substrate

Mode II Interfacial Fracture Toughness of Multi-Walled Carbon Nanotubes Reinforced Nanocomposite Film on Aluminum Substrate

Molecular dynamics simulation on PyC interfacial failure mechanism and shear strength of SiC/SiC composites

The sintering kinetics of shellfish porcelain reinforced by sepiolite nanofibres

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