Preparation of 3D C<sub>f</sub>/SiC anti-high temperature oxidation composites and engineering test of their members

CHEN Zhiyan; YANG Yi; ZOU Shiqin

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CHEN Zhiyan, YANG Yi, ZOU Shiqin. Preparation of 3D Cf/SiC anti-high temperature oxidation composites and engineering test of their members[J]. Acta Materiae Compositae Sinica, 2014, 31(5): 1264-1269.

Citation:

CHEN Zhiyan, YANG Yi, ZOU Shiqin. Preparation of 3D C_f/SiC anti-high temperature oxidation composites and engineering test of their members[J]. Acta Materiae Compositae Sinica, 2014, 31(5): 1264-1269.

Citation:

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Preparation of 3D C_f/SiC anti-high temperature oxidation composites and engineering test of their members

1.
School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
2.
State Key Laboratory of New Ceramic Fibers and Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, Changsha 410073, China

Received Date: 2013-11-18
Rev Recd Date: 2014-01-02
Publish Date: 2014-10-15

Abstract

Abstract

3D C_f/SiC anti-high temperature oxidation composites were prepared with low-molecular polycarbosilane (PCS) via precursor infiltration and pyrolysis (PIP) process, chemical vapor deposition (CVD) and powder sintering technology.FTIR, ¹H-NMR, gel permeation chromatography (GPC), TGA-DTA, XRD and TEM were used to research the structure and inorganic process of low-molecular weight PCS.Results show that the main structure of PCS may be [(-Si(CH₃, H)-CH₂-]n, the number average molecular weight of PCS is 420, its ceramic yield is approximately 70%, and PCS translates into β-SiC micro-crystal at 1 200 ℃.3D C_f/SiC composites and their members show good performance of anti-high temperature oxidation.
- low molecular polycarbosilane,
- precursor infiltration and pyrolysis,
- 3D C_f/SiC composites,
- anti-high temperature oxidation,
- inorganic process
Long Abstrsct
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