Fabrication and toughening behavior of carbon nanotube (CNT) scaffold reinforced SiBCN ceramic composites with high CNT loading

Han, Jia-Jie; Su, Dong; Zhao, Zhihao; Li, Xiaolei; Ji, Huiming; Yan, Xiao; Zhang, Jin

doi:10.1016/j.ceramint.2017.04.046

Cited by 26 publications

(9 citation statements)

References 35 publications

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“…Han et al report that they use macroscopic CNT materials to promote dispersion [53]. Vertical, horizontal, and porous CNT materials have been used to prepare nanocomposites by direct infiltration, which can hinder the aggregation of CNT.…”

Section: Non-covalent Functionalisationmentioning

confidence: 99%

“…Generally, the modulus of CNTs are scaled according to their length, so scholars have stretched pre-CNT to enhance its strength [95,96]. Han et al report that 3D CNT scaf folds re- inforce SiC-BCN composites [53]. Numerous CNT bundles are observed, and certain parallel CNT bundles are at the root of the vertical bundle.…”

Section: Interfacial Microstructure and Formation Principlementioning

confidence: 99%

“…Only when the stress exceeds the strength of the CNT do the CNT bunches fail because of the strong bond between the CNT and ceramics. The 3D structure makes full use of the strength and toughness of the CNT, increases the interfacial shear force, improves the stress transfer and realises stress distribution on a single CNT [53]. However, if the graphene filler exceeds the permeability limit, then it will form a three-dimensional network that will cause failure of the bridging mechanism and reduce the properties of the composite material [97].…”

Section: Interfacial Microstructure and Formation Principlementioning

confidence: 99%

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Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Liu

Jiang

Shi

et al. 2020

Nanotechnology Reviews

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AbstractNanocarbon materials (carbon nanotubes, graphene, graphene oxide, reduced graphene oxide, etc.) are considered the ideal toughening phase of ceramic matrix composites because of their unique structures and excellent properties. The strengthening and toughening effect of nanocarbon is attributed to several factors, such as their dispersibility in the matrix, interfacial bonding state with the matrix, and structural alteration. In this paper, the development state of nanocarbon-toughened ceramic matrix composites is reviewed based on the preparation methods and basic properties of nanocarbon-reinforced ceramic matrix composites. The assessment is implemented in terms of the influence of the interface bonding condition on the basic properties of ceramic matrix composites and the methods used to improve the interface bonding. Furthermore, the strengthening and toughening mechanisms of nanocarbon-toughened ceramic matrix composites are considered. Moreover, the key problems and perspectives of research work relating to nanocarbon-toughened ceramic matrix composites are highlighted.

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Section: Non-covalent Functionalisationmentioning

confidence: 99%

Section: Interfacial Microstructure and Formation Principlementioning

confidence: 99%

Section: Interfacial Microstructure and Formation Principlementioning

confidence: 99%

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Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Liu

Jiang

Shi

et al. 2020

Nanotechnology Reviews

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“…Based on the organic method, C f /SiBCN composites are prepared via densifying carbon fiber preform through repeated precursor infiltration pyrolysis (PIP). 10,15,16 However, precursor preparation involves high requirements and cost, and the repeated PIP process (up to 12 times) requires long preparation cycle. 16 Using inorganic powders (such as Si, C, B, BN, etc.)…”

Section: Introductionmentioning

confidence: 99%

Mechanical and thermal shock properties of C_f/SiBCN composite: Effect of sintering densification and fiber coating

et al. 2022

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In this work, resin-derived carbon coating was prepared on carbon fibers by polymer impregnation pyrolysis method, then silicoboron carbonitride powder was prepared by mechanical alloying, and finally carbon fiber-reinforced silicoboron carbonitride composites were prepared by hot-pressing process. The effects of sintering densification and fiber coating on microstructure, mechanical properties, thermal shock resistance, and failure mechanisms of the composites were studied. Fiber bridging hinders the sintering densification, causing more defects in fiber-dense area and lower strength. However, higher sintering temperature (1800-2000 • C) can improve mechanical properties significantly, including bending strength, vickers hardness, and elastic module, because further sintering densification enhances matrix strength and fiber/matrix bonding strength, while the change of fracture toughness is not obvious (2.24-2.38 MPa⋅m 1/2 ) due to counteraction of higher debonding resistance and less pull-out length. However, fiber coating improves fracture toughness greatly via protecting carbon fibers from chemical corrosion and damage of thermal stress and external stress. Due to lower coefficient of thermal expansion, lower fiber loading ratio, less stress concentration at the fiber/matrix interface, and better defect healing effect, lower sintering temperature favors thermal shock resistance of composites, and thermal shock recession mechanisms are the damage of interface.

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“…At present, C f /SiBCN composites are mainly prepared via densifying carbon ber preform through repeated precursor in ltration pyrolysis (PIP) [10,[15][16]. However, precursor preparation involves high requirements and cost and repeated PIP process (up to 12 times) requires long preparation cycle [16].…”

Section: Introductionmentioning

confidence: 99%

Mechanical /thermal Shock Properties and Failure Mechanisms of Cf/SiBCN Composites Effect of Sintering Densification and Fiber Coating

Niu

Wang

Pan

et al. 2021

Preprint

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In this work, resin derived carbon coating was prepared on carbon fibers by polymer impregnation pyrolysis method (PIP), and then Cf/SiBCN composites were prepared by hot pressing process. The effects of sintering densification and fiber coating on microstructure, mechanical properties, thermal shock resistance, and failure mechanisms of the composites were studied. Fiber bridging hinders the sintering densification, causing more defects in fiber-dense area and lower strength. However, higher sintering temperature (1800-2000℃) can improve mechanical properties significantly, including bending strength, vickers hardness, and elastic module, because further sintering densification enhances matrix strength and fiber/matrix bonding strength, while the change of fracture toughness is not obvious (2.24-2.38 MPa·m1/2) due to counteraction of higher debonding resistance and less pull-out length. However, fiber coating improves fracture toughness greatly via protecting carbon fibers from chemical corrosion and damage of thermal stress and external stress. Due to lower coefficient of thermal expansion, lower fiber loading ratio, less stress concentration at the fiber/matrix interface and better defect healing effect, lower sintering temperature favor thermal shock resistance of composites and thermal shock recession mechanisms are the damage of interface.

show abstract

Fabrication and toughening behavior of carbon nanotube (CNT) scaffold reinforced SiBCN ceramic composites with high CNT loading

Cited by 26 publications

References 35 publications

Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Mechanical and thermal shock properties of C_f/SiBCN composite: Effect of sintering densification and fiber coating

Mechanical /thermal Shock Properties and Failure Mechanisms of Cf/SiBCN Composites Effect of Sintering Densification and Fiber Coating

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Fabrication and toughening behavior of carbon nanotube (CNT) scaffold reinforced SiBCN ceramic composites with high CNT loading

Cited by 26 publications

References 35 publications

Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Research on the interface properties and strengthening–toughening mechanism of nanocarbon-toughened ceramic matrix composites

Mechanical and thermal shock properties of Cf/SiBCN composite: Effect of sintering densification and fiber coating

Mechanical /thermal Shock Properties and Failure Mechanisms of Cf/SiBCN Composites Effect of Sintering Densification and Fiber Coating

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Mechanical and thermal shock properties of C_f/SiBCN composite: Effect of sintering densification and fiber coating