Effect of SiC on the Oxidation Resistance Performance of C/ZrC Composite Prepared by Polymer Infiltration and Pyrolysis Process

Abstract

Stitched carbon fiber cloth reinforced zirconium carbide composite (C/ZrC) was prepared by polymer infiltration and pyrolysis (PIP) process. C/ZrC-SiC composite was obtained by further introduction of SiC with PIP process in order to improve anti-oxidation property. The results show that 1.9vol% SiC addition improves the mechanical and anti-oxidation properties of C/ZrC composite. The flexural strength of C/ZrC is 247.9MPa, while that of C/ZrC-SiC is 273.1MPa. After oxidation in a muffle furnace at 1200°C for 30 minutes, the mass loss rate was reduced from 30.6% (C/ZrC) to 20.1% (C/ZrC-SiC), and the flexural strength and elastic modulus of C/ZrC were 56.7MPa and 5.7GPa, respectively, while those of C/ZrC-SiC were 122.9MPa and 17.2GPa, respectively.

The Effect of Zirconium Carbide on Ablation of SiC‐Coated Carbon/Silicon Carbide Composites Under an Oxy‐Acetylene Flame

“…[14][15][16][17][18], then SiC matrix (Eqs. [6][7][8][9][10][11][12][13] is oxidized, while carbon fibers are changed into CO (Eqs. [19][20][21][22][23].…”

“…As one kind of the most popular methods to fabricate C/SiC composites, PIP route has been actively developed . However, at higher temperatures (>1200°C), oxidation of the fiber, interphase, and matrix cooperatively influence the oxidation behavior of PIP‐C/SiC composites in oxygen atmosphere …”

“…[1][2][3][4][5] However, at higher temperatures (>1200°C), oxidation of the fiber, interphase, and matrix cooperatively influence the oxidation behavior of PIP-C/SiC composites in oxygen atmosphere. 6,7 Preparing coatings on the surface of PIP-C/SiC composites was an efficient way for protection at high temperature. 7 SiC ceramics had been proved an effective coating for protecting carbon materials from oxidation.…”

“…6,7 Preparing coatings on the surface of PIP-C/SiC composites was an efficient way for protection at high temperature. 7 SiC ceramics had been proved an effective coating for protecting carbon materials from oxidation. 6 The anti-oxidation ability of SiC coating was commonly tested at an invariable temperature.…”

Evolution of microstructure and mechanical properties of PIP-C/SiC composites after high-temperature oxidation

“…At higher temperatures (>1200 • C), the oxidation of C fibers, interphase and SiC matrix cooperatively influence the oxidation behavior of C/SiC composites in oxygen atmosphere [6,7]. Before the practical application of PIP-C/SiC composites in these cases, investigation on the evolution of microstructure and mechanical properties during high-temperature oxidation was required.…”