Microstructure study of PAN–pitch-based carbon–carbon composite

Lee, K.J.; Chen, Z.Y.

doi:10.1016/s0254-0584(03)00272-4

Cited by 10 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3, the flexural strength and modulus values have improved with increase in HTT. Increase in heating temperature, not only leads to an increase in fiber/matrix interaction, 32,34 but at the same time the planes become more and more aligned leading to higher crystallinity in the material as seen from above sections (XRD and Raman data). This leads reduced defects and crack in the samples which could otherwise act as crack initiators, 26,32,35,36 and hence results in improved strength of the composites.…”

Section: Resultsmentioning

confidence: 79%

“…The process of heating improves the alignment of the basal planes of the fiber and matrix. 34,38,39 It also graphitizes the fiber/matrix interface (as shown in the SEM images), thus leading to an increase in the electrical conductivity. large irreversible capacity in the first cycle, most due to the creation of solid electrolyte interface, which consumes large amount of Na + ions trapped between the carbon layers.…”

Section: Resultsmentioning

confidence: 95%

See 1 more Smart Citation

Carbon Paper as a Promising Free Standing Anode for Sodium Ion Batteries

Waseem¹,

Nithya²,

Maheshwari³

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

Porous conducting carbon fiber composite papers have been developed by a two-step process. This involves fabrication of carbon fiber preform followed by composite formation. Different composite papers have been developed by varying the final heat treatment temperature of the composite, viz. 800 °C, 1100 °C, 1400 °C, 1800 °C and 2300 °C. The study gives an insight as to how the structure, porosity, morphology, electrical and mechanical properties of the carbon/carbon composites vary with temperature; and further the effect of these variations on the performance of the composites as anode material for Na-ion batteries. The sample heat-treated to 800 °C showed high reversible capacity of 278 mAh g −1 at a current density of 37 mA g −1 . Additionally, high columbic efficiency (>99%) and 72% retention of the initial capacity has been demonstrated for 1000 cycles. This exceptional performance is attributed to the small crystallite size, large d-spacing and disordered structure of the sample which favors the insertion/de-insertion of sodium ion into the composite anode. Hence, it seems as a promising anode material for sodium-ion batteries.

show abstract

Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 95%

Carbon Paper as a Promising Free Standing Anode for Sodium Ion Batteries

Waseem¹,

Nithya²,

Maheshwari³

et al. 2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Lachaud et al [6] set up a modeling strategy to predict 3D C/C composite ablation behavior, and the models were consistent with the experimental data. Lee et al [7] characterized the surface microstructure of a 2D C PAN /C composite and found that the transverse CF PAN of flank surface had a random orientation of basal planes that was different from the fiber surface. Baxter et al [8] studied the effect of chemical vapor infiltration (CVI) on the corrosion and thermal conduction of porous C/C composite, and found that both radiative heat transfer and the heat transfer path in pores played important roles in the parallel path thermal conduction.…”

Section: Introductionmentioning

confidence: 99%

Ablation Behavior of the SiC-Coated Three-Dimensional Highly Thermal Conductive Mesophase-Pitch-Based Carbon-Fiber-Reinforced Carbon Matrix Composite under Plasma Flame

Huang

et al. 2019

Materials

View full text Add to dashboard Cite

This study is focused on a novel high-thermal-conductive C/C composite used in heat-redistribution thermal protection systems. The 3D mesophase pitch-based carbon fiber (CFMP) preform was prepared using CFMP in the X (Y) direction and polyacrylonitrile carbon fiber (CFPAN) in the Z direction. After the preform was densified by chemical vapor infiltration (CVI) and polymer infiltration and pyrolysis (PIP), the 3D high-thermal-conductive C/C (CMP/C) composite was obtained. The prepared CMP/C composite has higher thermal conduction in the X and Y directions. After an ablation test, the CFPAN becomes needle-shaped, while the CFMP shows a wedge shape. The fiber/matrix and matrix/matrix interfaces are preferentially oxidized and damaged during ablation. After being coated by SiC coating, the thermal conductivity plays a significant role in decreasing the hot-side temperature and protecting the SiC coating from erosion by flame. The SiC-coated CMP/C composite has better ablation resistance than the SiC-coated CPAN/C composite. The mass ablation rate of the sample is 0.19 mg·(cm−2·s−1), and the linear ablation rate is 0.52 μm·s−1.

show abstract

“…The high modulus fibers are generally based on polyacrylonitrile (PAN) or pitch, while the matrices may be resin-based, pitch-based, or pyrolysis-based. When different combination of fiber and matrix is adopted, C/C composites have different microstructure [4][5][6][7][8][9][10]. For example, an interface generally forms between the fiber and matrix, and the fiber/matrix interface can be divided into four kinds: parallel plate structure, vertical plate structure, sheathlike structure, and isotropic structure [11].…”

Section: Introductionmentioning

confidence: 99%

An Analytical Model of Thermal Conductivity for Carbon/Carbon Composites with Pitch-Based Matrix

Feng

Zhi

Fan

et al. 2014

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The carbon/carbon (C/C) composites are composed of carbon fibers, carbon matrix, and pores and cracks, which have been successfully used in various aerospace applications. In this paper, nanoscale submodel is proposed to describe the thermal conductivity of the matrix based on its microscopic structure, and then the submodel is incorporated into a microscale model to analytically predict the equivalent thermal conductivities of the composites by equivalent circuit approach. The results predicted by the present model agree well with those from the experimental measurements. Based on the model, the effects of the composite porosity as well as the thickness and porosity of the interface phase on the thermal performance of five composites are studied. It is found that the thermal conductivities show decreasing trends in responding to an increase in each of the three parameters. The composite porosity has a significant effect on the thermal conductivities both parallel and transverse to the fiber axis, while the thickness and the porosity of the interface phase remarkably affect the thermal conductivity only transverse to the fiber axis.

show abstract

Microstructure study of PAN–pitch-based carbon–carbon composite

Cited by 10 publications

References 23 publications

Carbon Paper as a Promising Free Standing Anode for Sodium Ion Batteries

Carbon Paper as a Promising Free Standing Anode for Sodium Ion Batteries

Ablation Behavior of the SiC-Coated Three-Dimensional Highly Thermal Conductive Mesophase-Pitch-Based Carbon-Fiber-Reinforced Carbon Matrix Composite under Plasma Flame

An Analytical Model of Thermal Conductivity for Carbon/Carbon Composites with Pitch-Based Matrix

Contact Info

Product

Resources

About