Tensile strength and fracture toughness of C/C and metal infiltrated composites Si–C/C and Cu–C/C

Wang, Wen Xue; Takao, Yoshihiro; Matsubara, Terutake

doi:10.1016/j.compositesa.2007.11.004

Cited by 25 publications

(13 citation statements)

References 6 publications

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“…The probable and actual influence of fabric type is remarkable, not just with respect to porosity, interfabric layer interface, matrix micro-cracking and fibre/matrix interface, but also for the physical and mechanical properties, as will be shown in sections 3.4 and 3.5 and further discussed in the section Comparison of the Results with C f /C m Literature Data. Degree of graphitisation (DOG) Figure 8 shows the Bragg-angle diffraction peaks for both composites, and Table 1 gives the interlayer spacing {d 002 } calculated using equation (5) and the DOG calculated using equation (6). Table 1 shows that the composites are graphitised to nearly the same level.…”

Section: Preparation Of Test Specimens and Testingmentioning

confidence: 97%

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Effect of carbon fabric type on properties of 2D carbon–carbon composites processed by liquid pitch impregnation–pyrolysis

Jana

Rajulapati

Prasad

et al. 2016

Journal of Composite Materials

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The present study reports on the microstructural, physical, thermal and mechanical properties of two types (A and B) of carbon-carbon composites processed by an economical route. Skeleton composites were first made by pyrolysing laminated carbon fibre-reinforced phenolic composites and subsequently densified by liquid pitch impregnation-pyrolysis process. Both types of composite employed polyacrylonitrile-based 8-harness satin woven carbon fabrics, Type A being woven with tows of continuous fibres, whereas Type B used yarns of discontinuous fibres. Experimental results indicated that the Type A composite had better flexural and tensile modulus and strength values. However, the Type B composite had better interlaminar shear strength and through-thickness thermal conductivity, despite being less dense. These results are discussed and explained from microstructural and fractographic analysis using optical and scanning electron microscopes. Finally, the results were compared with those intended for similar applications.

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Section: Preparation Of Test Specimens and Testingmentioning

confidence: 97%

“…The ultra-high temperature capabilities have made C f / C m composites the materials of choice for many important sectors, including the aerospace industry (rocket-propulsion systems, heat shields of re-entry space vehicles, aircraft brakes), high temperature nuclear and fusion reactors, road and rail transport braking systems. 1–7…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon fabric type on properties of 2D carbon–carbon composites processed by liquid pitch impregnation–pyrolysis

Jana

Rajulapati

Prasad

et al. 2016

Journal of Composite Materials

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“…x composites (C f /Cu) are expected to be used as electronic components and wall surface shields in fusion devices [1][2][3] , due to the unique combination of its physical and chemical properties. There are two common ways to produce C f /Cu.…”

Section: Introductionmentioning

confidence: 99%

Preparation and arc erosion resistance of Cf/Cu composite by vacuum melting infiltration

Zhang

Liu

Zhao

et al. 2014

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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C f /Cu composite was prepared by vacuum melting infi ltration. Ti and Cr were doped to the Cu alloy to improve the wettability between Cu and carbon. The microstructure was investigated by XRD, SEM and EDS. The arc erosion rate of C f /Cu composite was investigated in vacuum. The results showed that the Ti and Cr could improve the wettability between Cu and C/C preform and the infi ltration ability of Cu into C/ C preform greatly. A TiC interface formed between the fi bers and matrix. The good bonding between the fi ber and matrix guaranteed that part of the Cu matrix can still be bonded on the fi bers even when the material was exposed to the plasma. Consequently, the carbon fi bers were protected from the erosion. In comparison, Cu was completely consumed by the arc erosion. Hence, the graphite was eroded and presented a caulifl ower-like morphology. Therefore, the prepared C f /Cu had better ability to resist the arc erosion, compared with common Cu-C material.

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“…In real applications, the mechanical property of C/C composite is one of the main research objects, including stress-strain behaviour and failure mechanisms. The following studies have already been performed: damage and failure mechanisms [5–9], modeling for mechanical behaviour and damage [10,11], and microstructure and mechanical properties [12–15]. Some investigations indicated that damage occurred first at the locations of the interface where the woven yarns crossed one another during tensile or flexural loading.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Observation of Damage Nucleation in 3D Braided Carbon/Carbon Composites

Jin

Wei

Meng

et al. 2009

Advanced Composites Letters

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The micro mechanisms of flexure damage at the notch tip in a three-dimensionally braided carbon/carbon composite (3D–C/C) were investigated in real-time through a Scanning Electron Microscopy. It was found that the damage was nucleated in the fibre bundle/matrix interface around the notch tip. The different damage modes were found in different directions of the 3D–C/C. The x-directional flexural specimens seem to be insensitive to the pre-notch while the z-directional flexural specimens seem to be sensitive to the pre-notch. Fibre yarns acted as an obstacle to crack propagation and it was necessary to increase the load to propagate the crack through the adjacent fibre yarn. Comparing with the x-directional flexural specimens, the forces could be better transmitted in z-directional flexural specimens because the fibres of z-direction bundles can tightly adjoin to each other.

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Tensile strength and fracture toughness of C/C and metal infiltrated composites Si–C/C and Cu–C/C

Cited by 25 publications

References 6 publications

Effect of carbon fabric type on properties of 2D carbon–carbon composites processed by liquid pitch impregnation–pyrolysis

Effect of carbon fabric type on properties of 2D carbon–carbon composites processed by liquid pitch impregnation–pyrolysis

Preparation and arc erosion resistance of Cf/Cu composite by vacuum melting infiltration

Real-Time Observation of Damage Nucleation in 3D Braided Carbon/Carbon Composites

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