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Affiliation of Author(s):

材料科学与工程学院

Journal:

Ceramics International

Key Words:

中文关键字：复合材料；纤维；界面；力学性能，英文关键字：Composites; Fibers; Interfaces; Mechanical propert

Abstract:

A three-dimensional needled carbon fiber integrated felt was used as the preform for SiC or B4C modified carbon/carbon (C/C) composite: C/C–B4C or C/C–SiC which was prepared through unidirectional pressure slurry infiltration-filtration followed by chemical vapor infiltration. There were four kinds of interface microstructure modes between ceramic filler particles and pyrolytic carbon (PyC) matrix: enwrapping, encircling, embedding and infilling. For C/C–B4C, enwrapping, encircling and embedding were the main modes. For C/C–SiC, embedding was the main one. The addition of ceramic filler complicated some fiber/matrix interfaces, forming composite interface layers and dual interface layers. There were three kinds of characteristic fiber/matrix interfaces: (fiber/filler/PyC)n/PyC, fiber/(filler/PyC)/PyC, fiber/filler/PyC. The flexure strength of C/C was 98 MPa, whereas those of C/C–B4C and C/C–SiC were 200 and 140 MPa, respectively. The addition of ceramic filler not only increased the bonding strength of some fiber/matrix interface, but also toughened the PyC matrix.

Note:

该论文的SCI检索号：000330820500051

Co-author:

范尚武,殷小玮,张立同,成来飞,王一光

First Author:

caiyanzhi

Indexed by:

Journal paper

Volume:

卷：40

Issue:

期：

Page Number:

页：399–408

Translation or Not:

no

Date of Publication:

2014-01-01