Dependence of mechanical properties on microstructure of high-textured pyrocarbon prepared via isothermal and thermal gradient chemical vapor infiltration

Wang, Tiyuan; Li, Hejun; Shen, Qiang; Li, Kun; Song, Qiang; Zhang, Shouyang

doi:10.1016/j.compositesb.2020.107982

Cited by 36 publications

(6 citation statements)

References 62 publications

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“…Carbon fibers are the reinforcements for C/C composites. [26][27][28][29] Based on the specific needs and application fields, carbon fibers are usually woven into porous clothes or preforms according to certain weaving methods. According to the dimensions of preforms, the carbon fiber reinforcements were divided into 2D woven carbon fiber cloth [30] and 3D carbon fiber felt.…”

Section: Carbon Fiber Preformsmentioning

confidence: 99%

“…As mentioned above, two kinds of preforms, such as 2D carbon fiber cloth and 3D carbon fiber felt, were used to prepare C/C composites, which makes their preparation process a little different. [28,40,41] For 2D carbon fiber cloth, the preparation process of 1D nanostructures reinforced C/C composites is usually composed of three steps (Figure 3a). [42] First, 1D nanomaterials served as nanoreinforcements were introduced on the surface of carbon fiber cloth using various methods, constructing the 2D structured multiscale reinforcements.…”

Section: "Step-by-step" Fabrication Processmentioning

confidence: 99%

Section: Preparation Of 1d Nanostructures Reinforced C/c Compositesmentioning

confidence: 99%

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Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Yin

Han

Liu

et al. 2022

Adv Funct Materials

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Carbon fiber reinforced carbon matrix (carbon/carbon, C/C) composites have become the promising candidates for high‐temperature thermal structure materials in aerospace fields, owning to a series of excellent structural merits. However, for aculeate or thin‐walled C/C composites, due to the fact that continuous carbon fibers are cut off during the machining process and the amount of residual carbon fibers is limited, carbon matrix cannot be effectively strengthened just by using carbon fibers, resulting in a sharp decline in mechanical performance. Furthermore, the rapid development of aerospace vehicles requires that C/C composites not only have excellent mechanical properties but also possess multifunctional properties. To effectively solve these problems and meet the increasing demands, various 1D nanostructures as nanoreinforcements have been introduced into C/C composites, achieving the great improvement in mechanical and functional properties. In this review, the state‐of‐the‐art research activities regarding different 1D nanoreinforcements applied in C/C composites are systematically summarized. Finally, this review is concluded and the future research prospects are proposed. This review provides the “1D nanoreinforcements” strategy to further improve the properties of C/C composites, which could be widely used for reference by researchers in the fields of different fiber/matrix composites.

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Section: Carbon Fiber Preformsmentioning

confidence: 99%

Section: "Step-by-step" Fabrication Processmentioning

confidence: 99%

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Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Yin

Han

Liu

et al. 2022

Adv Funct Materials

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“…All of these have been proven to be successful in preventing the penetration of molten salt. However, the vapor deposition method and vapor infiltration process are time-consuming and costly, and can lead to the generation of spatial gradients [15], resulting in poor uniformity and irradiation properties [16,17]. The non-binder graphite (such as nanopore-isotropic graphite (NPIG) and self-sintered nanopore graphite (SSNG)) are prone to cracking due to the large contraction of the carbonization process [18,19], making it difficult to prepare large-scale products.…”

Section: Introductionmentioning

confidence: 99%

Irradiation Characteristics of Non-Impregnated Micropore Graphite for Use in Molten Salt Nuclear Reactors

Lian,

Li,

Huang

et al. 2024

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Non-impregnated small-pore graphite (NSPG), which has a compact microstructure and is used in molten salt reactors (MSRs), was prepared by a novel process. The pore diameter of NSPG was reduced to ~800 nm. The irradiation evaluation of NSPG was carried out by 7 MeV Xe26+ ion irradiation. The microstructural changes of NSPG were investigated with IG-110 as a comparison. The graphitization degree of NSPG was higher than that of IG-110, though it was not subjected to an impregnation process. Under low-dose ion irradiation (<2.5 dpa), the microscopic morphology of the NSPG changes in a small magnitude, and the lamellar structure of graphite remains within the scale of more than a dozen nanometers, which exhibits a better resistance to irradiation. With the increase in irradiation dose, the accumulation of defects leads the graphite toward amorphization, which shows consistency with IG-110. This study provides an efficient and low-cost method for the preparation of graphite for MSR, and investigates the damage behavior of graphite, which is of great significance in accumulating data for the development of MSR nuclear graphite and the optimal design of graphite materials.

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“…[11][12][13] Carbon fiber reinforced carbon matrix (C/C) and ceramic matrix composites are also good lightweight materials, and have been greatly studied in the last decades. [14][15][16] Various fabrics could be filled by carbon or ceramic gradually without fiber damage through chemical vapor infiltration and process of precursor infiltration and pyrolysis (PIP). 17,18 Before completely infiltrated, the composites are porous and can be used as reinforcement of metal matrix.…”

Section: Introductionmentioning

confidence: 99%

Effect of preset interfacial ZrB₂ particles on the microstructure and properties of C/C-AlSi composites

Feng

Tang

Liu

et al. 2021

Journal of Composite Materials

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ZrB2 particles were preset to the C-AlSi interface to improve oxidation resistance of C/C preform and adjust the microstructure of the interpenetrated C/C-AlSi composite prepared through pressure infiltration of eutectic AlSi into a fiber fabric based porous C/C skeleton. Micro-morphology investigations suggested that the AlSi textures were changed from dendritic to petals-like state, and the nano to micro-scale ZrB2 particles were dispersed into AlSi and affected the distribution of Al and Si nearby carbon. Tests demonstrated that C/C-AlSi have slight lower density and thermal expansion coefficient, and higher original compressive strength, while C/C-ZrB2-AlSi composites presented an outstanding strength retention rate after thermal shock. Fracture and micro-morphology indicated that the influence of the preset ZrB2 to the interface of carbon and alloy greatly affected the generation and propagation of cracks, which determined the diverse compression behaviors of the composites before and after thermal shock.

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Dependence of mechanical properties on microstructure of high-textured pyrocarbon prepared via isothermal and thermal gradient chemical vapor infiltration

Cited by 36 publications

References 62 publications

Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Irradiation Characteristics of Non-Impregnated Micropore Graphite for Use in Molten Salt Nuclear Reactors

Effect of preset interfacial ZrB₂ particles on the microstructure and properties of C/C-AlSi composites

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Dependence of mechanical properties on microstructure of high-textured pyrocarbon prepared via isothermal and thermal gradient chemical vapor infiltration

Cited by 36 publications

References 62 publications

Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Irradiation Characteristics of Non-Impregnated Micropore Graphite for Use in Molten Salt Nuclear Reactors

Effect of preset interfacial ZrB2 particles on the microstructure and properties of C/C-AlSi composites

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Effect of preset interfacial ZrB₂ particles on the microstructure and properties of C/C-AlSi composites