Friction behaviors of carbon/carbon composites with different pyrolytic carbon textures

Xiong, Xiang; Huang, Baiyun; Li, Jianghong; Xu, Hui

doi:10.1016/j.carbon.2005.08.022

Cited by 73 publications

(38 citation statements)

References 11 publications

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“…Accordingly, composite A has stable COF with time. However, it appears that the low hardness of RL induces high COF and high volume losses of composite A. SL carbon, possessing a high hardness, limits the influence of the increasing loads, which brought out low COF and volume loss of composite C [1]. For composite B, due to the poor bonding between the RC carbon and the fibers, the worn surface of is easy to be destroyed by the fiber debris and results in the second highest COF and volume loss at the same load [4].…”

Section: Resultsmentioning

confidence: 99%

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Sliding Friction and Wear Behavior of C/C Composites Against 40 Cr Steel

Ge¹,

Yi²,

Xu³

et al. 2009

Carbon letters

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In this work, effects of carbon matrix on sliding friction and wear behavior of four kinds of C/C have been investigated against 40 Cr steel ring mate. Composite A with rough lamination carbon matrix (RL) shows the highest volume loss and coefficient of friction, while composite D with smooth lamination/resin carbon matrix (SL/RC) shows the lowest volume loss. The worn surface of composite A appears smooth, whereas that of composite C with smooth lamination carbon (SL) appears rough. The worn surface of composite D appears smooth under low load but rough under high load. Atomic force microscope images show that the size of wear particles on the worn surface is also dependent on the carbon matrix.

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Section: Resultsmentioning

confidence: 99%

“…Compared with graphite, C/C composite is promising as frictional materials due to their low density, high strength and excellent tribological properties [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Sliding Friction and Wear Behavior of C/C Composites Against 40 Cr Steel

Ge¹,

Yi²,

Xu³

et al. 2009

Carbon letters

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show abstract

“…During taxiing procedure, the carbon brake discs have a complicated effect on the entire brake system [20][21][22]. For example, assembling clearance [23], eccentric wear, and wear particles may cause considerable brake force fluctuation.…”

Section: Brake Force Fluctuationmentioning

confidence: 99%

Analysis on Aircraft Brake Squeal Problem Based on Finite Element Method

Zhang

Nie

2017

International Journal of Aerospace Engineering

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Brake squeal phenomenon is a problem that has been long studied using multiple methods and theories. Finite Element Method (FEM) has been applied to the study of brake squeal problem. First, a disc brake model has been established. Complex mode theory has been applied to the mode analysis and unstable vibration modes can be extracted subsequently. The form of unstable vibration mode has been studied. Then, transient dynamic simulation using explicit dynamic method has been performed. Response in both time and frequency domain has been analyzed. Two methods have been compared, considering accuracy and calculation consumption. Then, the effect of different parameters such as coefficient of friction, stiffness, and brake force fluctuation frequency on squeal phenomenon has been analyzed. It can be found that coefficient of friction and the brake stiffness have a positive correlation with the extent of brake squeal phenomenon, while the frequency of brake force fluctuation should remain as low as possible. Afterwards, a ring-shaped layer of viscoelastic damping material is constrained to outer margin of the stator to restrain the unstable modal. This method can change the vibration nature and improve the brake squeal problem.

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“…They were first synthesized in the 1970s [1] and since have been diversified for various applications on the basis of their versatility in tailoring their properties. They are used in the manufacture of heat sinks [2,3], and in thermal assemblies and as brake discs of airplanes and military vehicles [4,5], and in reusable launch vehicles, owing to their excellent thermal properties and low coefficient of thermal expansion at higher temperatures.…”

Section: Introductionmentioning

confidence: 99%

Morphological optimization of process parameters of randomly oriented carbon/carbon composite

Raunija¹,

Manwatkar²,

Verma³

2014

Carbon letters

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A microstructure analysis is carried out to optimize the process parameters of a randomly oriented discrete length hybrid carbon fiber reinforced carbon matrix composite. The composite is fabricated by moulding of a slurry into a preform, followed by hot-pressing and carbonization. Heating rates of 0.1, 0.2, 0.3, 0.5, 1, and 3.3°C/min and pressures of 5, 10, 15, and 20 MPa are applied during hot-pressing. Matrix precursor to reinforcement weight ratios of 70:30, 50:50, and 30:70 are also considered. A microstructure analysis of the carbon/ carbon compacts is performed for each variant. Higher heating rates give bloated compacts whereas low heating rates give bloating-free, fine microstructure compacts. The compacts fabricated at higher pressure have displayed side oozing of molten pitch and discrete length carbon fibers. The microstructure of the compacts fabricated at low pressure shows a lack of densification. The compacts with low matrix precursor to reinforcement weight ratios have insufficient bonding agent to bind the reinforcement whereas the higher matrix precursor to reinforcement weight ratio results in a plaster-like structure. Based on the microstructure analysis, a heating rate of 0.2°C/min, pressure of 15 MPa, and a matrix precursor to reinforcement ratio of 50:50 are found to be optimum w.r.t attaining bloating-free densification and processing time.

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Friction behaviors of carbon/carbon composites with different pyrolytic carbon textures

Cited by 73 publications

References 11 publications

Sliding Friction and Wear Behavior of C/C Composites Against 40 Cr Steel

Sliding Friction and Wear Behavior of C/C Composites Against 40 Cr Steel

Analysis on Aircraft Brake Squeal Problem Based on Finite Element Method

Morphological optimization of process parameters of randomly oriented carbon/carbon composite

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