Microstructural and thermo-mechanical characterization of carbon/carbon composites

Compan, J.; Hirai, T.; Pintsuk, G.; Linke, J.

doi:10.1016/j.jnucmat.2008.12.222

Cited by 5 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon-carbon composites (C/C) have been considered as attractive material for high-temperature components owing to its excellent mechanical performance, such as the low density, low coe cient of thermal expansion, and high speci c strength even at elevated temperature above 2000℃ [1][2][3][4][5][6]. Until now, C/C composites have been widely utilized in advanced aero-engine, hypersonic vehicles, solid propellant rocket nozzles, thermonuclear reactors, and automobile breaks [7][8][9][10]. However, because of the unique preparation processes, it is very di cult to directly fabricate component with large and complex shape.…”

Section: Introductionmentioning

confidence: 99%

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Shen,

Li,

Sheng

et al. 2024

Preprint

View full text Add to dashboard Cite

In this paper, brazing of high reliability C/C composites-metal joint for high temperature application was studied. The surface of C/C composites was modified by Cr metallization process and then brazed to Ni-based superalloy by AgPd braze. Alumina block was used as interlayer and a zig-zag interfacial structure was constructed at the composites/braze interface. The results show that, after the metallization process, a strong adhesion reaction layer consisting of Cr carbides was coated on the C/C surface which in turn obviously improved the wettability of braze. The molted braze filled completely into the laser machined holes in C/C substate and well-bonded interfaces and homogeneous Ag(Pd) solution microstructure was obtained in the joint. The strength of joint with C/C metallized at 1100℃ is higher than that of joint with 1300℃. The joints exhibit very high bending strength up to 82 MPa and shear strength up to 54 MPa, respectively. The braze spikes increase the connection area and provide strong pinning effect.

show abstract

Section: Introductionmentioning

confidence: 99%

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Shen,

Li,

Sheng

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In order to improve the thermal shock resistance of CFCs several studies based on experiments and numerical simulation data showed the importance of the selection of an optimum fibre orientation. Fibres parallel to the loaded area have to be avoided as much as possible to limit the preferential erosion of CFCs under transient thermal shock loads [6][7][8]. The development of CFCs with different dopants such as carbides of Ti, W or Zr is one of the possibilities to improve some deficient properties of these materials.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Ti-doped 3D carbon fibre composites under intense thermal shock tests

et al. 2009

View full text Add to dashboard Cite

This paper reports on the development of novel Ti-doped 3D carbon fibre composites (CFCs) and their performance when exposed to transient thermal loads (disruptions) in the electron beam facility JUDITH at different conditions. Depending on the applied load, the CFCs showed three steps of erosion: 1) breaking of PAN fibres with pull out from the surface; 2) cracking and ablation of pitch fibres close to the interface of PAN/pitch fibre-bundles; 3) finally, erosion of pitch fibres in the centre of the bundle. The addition of titanium carbide resulted in a significant improvement in thermal shock behaviour of these materials compared to their undoped counterparts.

show abstract

Microstructure and mechanical properties of C/C composites/Ni superalloy dissimilar brazed joint for high-temperature applications

Shen,

Li,

Sheng

et al. 2024

Weld World

View full text Add to dashboard Cite

Microstructural and thermo-mechanical characterization of carbon/carbon composites

Cited by 5 publications

References 19 publications

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Brazing of surface modified C/C composites to Ni-based superalloy for high temperature applications

Behaviour of Ti-doped 3D carbon fibre composites under intense thermal shock tests

Microstructure and mechanical properties of C/C composites/Ni superalloy dissimilar brazed joint for high-temperature applications

Contact Info

Product

Resources

About