Mechanical and ablation properties of 2D-carbon/carbon composites pre-infiltrated with a SiC filler

Effects of ablation at different regions in three-dimensional orthogonal C/SiC composites ablated by oxyacetylene torch at 1800°C

“…Parts of SiC were oxidized forming SiO 2 with a small volume expansion. The SiO 2 not only shielded the inter-bundle pores on the erosion surface from the further attack by the thermal oxidizing atmosphere, but also acted as a barrier to oxygen diffusion due to its low oxygen permeability, leading to the homogeneous erosion (Tang et al, 2006). Due to its poorer oxidation resistance than SiC, the carbon fibers perpendicular to the surface of ablation were eroded, forming the depression structure comparing with the matrix.…”

“…So far, ablation research mainly concentrate on optimization of testing environment, C/C composites and 2D C/SiC composites, while studies on ablation morphology and microstructure of three-dimensional C/SiC 0924-0136/$ -see front matter © 2008 Elsevier B.V. All rights reserved. doi:10.1016/j.jmatprotec.2008.08.002 composites prepared by polycarbosilane infiltration pyrolysis (PIP) are rarely reported (Beyer et al, 1999;Patterson et al, 2000;Lee and Joo, 2004a,b;Tang et al, 2006;Pan et al, 2006). The present paper is to investigate the effects of ablation at different regions in three-dimensional orthogonal C/SiC composites ablated by oxyacetylene torch at 1800 • C.…”

Improvement in thermal fatigue behavior of Si–Mo–Cr coated C/C composites through modification of the C/C-coating interface

“…However, C/C composites show obvious degradation to an oxygen-containing atmosphere above 723 K, which greatly limits their applications in the field of high temperature and oxygen-containing environment [5]. Applying oxidation resistant coating has been proved an effective method to improve the oxidation resistance of C/C composites [6][7][8][9][10][11].…”

In-situ synthesis silicon nitride nanowires in carbon fiber felts and their effect on the mechanical properties of carbon/carbon composites

“…C/C composites have been widely used in aerospace applications due to their unique and superior properties such as light weight, low coefficient of thermal expansion, high thermal conductivity, good thermalshock resistance and ablation resistance [1][2]. However, 2D C/C composites, as one of the widely used C/C composites, have great deficiency in out-of-plane compressive strength and interlaminar sheer strength due to the pyrolytic carbon with poor mechanical property and the matrix annular crack, which limit their wide application to load bearing part [3][4].…”