OXIDIZING AGING EFFECTS ON SIC SIC COMPOSITES

被引：27

作者：

FRETY, N

MOLINS, R

BOUSSUGE, M

机构：

[1] Ecole des Mines de Paris, Centre des Matériaux, Evry Cédex, 91003

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 18期

关键词：

D O I：

10.1007/BF01105277

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of oxidizing ageing at 800 and 1400-degrees-C were investigated on two unprotected SiC-SiC composites differing in the thickness of the carbon interlayer between the fibres and the matrix. Three-point bending tests showed that ageing generally induces an embrittlement and a weakening of the material. Fractographic observations and microstructural analyses allowed this damage to be correlated with a strengthening of the bonding at the interfaces related to their oxidation. At 1400-degrees-C, this phenomenon is however limited by passive oxidation and by a change in the crystallographic structure of the silica created at the interfaces.

引用

页码：5084 / 5090

页数：7

共 9 条

[1]

BURKLAND CV, 1989, SAMPE J, V25, P29

[2]

CLARK TJ, 1986, CERAM ENG SCI P, V7, P901

[3]

COYLE TW, 1988, INTERFACES POLYM CER, P489

[4] RELATIONSHIP BETWEEN HIGH-TEMPERATURE DEVELOPMENT OF FIBER MATRIX INTERFACES AND THE MECHANICAL-BEHAVIOR OF SIC-SIC COMPOSITES [J].

FRETY, N ;

BOUSSUGE, M .

COMPOSITES SCIENCE AND TECHNOLOGY, 1990, 37 (1-3) :177-189

[5]

FRETY N, 1990, COMPTES RENDUS SEPTI, P411

[6] CREEP OF REACTION-BONDED SILICON-NITRIDE [J].

GRATHWOHL, G ;

THUMMLER, F .

JOURNAL OF MATERIALS SCIENCE, 1978, 13 (06) :1177-1186

[7]

INGHELS E, 1986, COMPTES RENDUS CINQU, P329

[8]

LESNIEWSKI C, 1988, COMMUNICATION

[9]

Sawyer L.C., 1986, CERAM ENG SCI P, V7, P914

← 1 →