The concept of a strong interface applied to SiC/SiC composites with a BN interphase

被引：113

作者：

Rebillat, F ^{[1
]}

Lamon, J ^{[1
]}

Guette, A ^{[1
]}

机构：

[1] CNRS, SNECMA, CEA, UB1,Lab Composites Thermostruct,UMR 5801, F-33600 Pessac, France

来源：

ACTA MATERIALIA | 2000年 / 48卷 / 18-19期

关键词：

interphase; interface; composites;

D O I：

10.1016/S1359-6454(00)00247-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Strong interfaces have been shown to allow improvement of the mechanical properties of ceramic matrix composites (CMC). The concept of a strong interface has been established in SiC/SiC composites with pyrocarbon (PyC) or multilayered (PyC/SiC) fiber coatings (also referred to as interphases). The present paper reports an attempt directed at applying the concept of a strong interface to SiC/SiC composites with a BN coating (referred to as SiC/BN/SiC). Fiber bonding and frictional sliding were investigated by means of push-out tests performed on 2D-composites as well as on microcomposite samples, and tensile tests performed on microcomposites. The stress-strain behavior of the SiC/BN/SiC composites and microcomposites is discussed with respect to interface characteristics and location of debonding either in the coating or in the fiber/coating interface. (C) 2000 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：4609 / 4618

页数：10

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