Crack initiation and growth characteristics in SiC/SiC under indentation test

W. Zhang; T. Hinoki; Y. Katoh; A. Kohyama; T. Noda; T. Muroga; J. Yu

doi:10.1016/S0022-3115(98)00222-0

Crack initiation and growth characteristics in SiC/SiC under indentation test

W. Zhang, T. Hinoki, Y. Katoh, A. Kohyama, T. Noda, T. Muroga, J. Yu

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The mechanical behavior of ceramic matrix composites (CMC) is known to be strongly influenced by fiber-matrix interfacial properties and there have been many efforts to clarify the interfacial characteristics. To understand the fracture mechanism of the materials it is necessary to clarify how the cracks initiate and propagate among fibers, interphase (coating) and matrix. The objective of this study is to investigate crack initiation and growth characteristics in SiC/SiC composites with variations in coating thickness and coating methods by means of micro-indentation technique. Micro-indentation tests and hardness tests were carried out on SiC/SiC composites produced by the chemical vapour infiltration (CVI) process. The intrinsic catastrophic mode of failure of the brittle composite was prevented by application of single carbon and multiple coatings on fibers. Thinner coatings are sensitive to make fibers debonded and may improve the toughness of the composites.

Original language	English
Pages (from-to)	1577-1581
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	258-263
Issue number	PART 2 B
DOIs	https://doi.org/10.1016/S0022-3115(98)00222-0
State	Published - Oct 1998
Externally published	Yes

Access to Document

10.1016/S0022-3115(98)00222-0

Cite this

@article{ca67e63937a94e8cad875f531520b37a,

title = "Crack initiation and growth characteristics in SiC/SiC under indentation test",

abstract = "The mechanical behavior of ceramic matrix composites (CMC) is known to be strongly influenced by fiber-matrix interfacial properties and there have been many efforts to clarify the interfacial characteristics. To understand the fracture mechanism of the materials it is necessary to clarify how the cracks initiate and propagate among fibers, interphase (coating) and matrix. The objective of this study is to investigate crack initiation and growth characteristics in SiC/SiC composites with variations in coating thickness and coating methods by means of micro-indentation technique. Micro-indentation tests and hardness tests were carried out on SiC/SiC composites produced by the chemical vapour infiltration (CVI) process. The intrinsic catastrophic mode of failure of the brittle composite was prevented by application of single carbon and multiple coatings on fibers. Thinner coatings are sensitive to make fibers debonded and may improve the toughness of the composites.",

author = "W. Zhang and T. Hinoki and Y. Katoh and A. Kohyama and T. Noda and T. Muroga and J. Yu",

year = "1998",

month = oct,

doi = "10.1016/S0022-3115(98)00222-0",

language = "English",

volume = "258-263",

pages = "1577--1581",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "PART 2 B",

}

TY - JOUR

T1 - Crack initiation and growth characteristics in SiC/SiC under indentation test

AU - Zhang, W.

AU - Hinoki, T.

AU - Katoh, Y.

AU - Kohyama, A.

AU - Noda, T.

AU - Muroga, T.

AU - Yu, J.

PY - 1998/10

Y1 - 1998/10

N2 - The mechanical behavior of ceramic matrix composites (CMC) is known to be strongly influenced by fiber-matrix interfacial properties and there have been many efforts to clarify the interfacial characteristics. To understand the fracture mechanism of the materials it is necessary to clarify how the cracks initiate and propagate among fibers, interphase (coating) and matrix. The objective of this study is to investigate crack initiation and growth characteristics in SiC/SiC composites with variations in coating thickness and coating methods by means of micro-indentation technique. Micro-indentation tests and hardness tests were carried out on SiC/SiC composites produced by the chemical vapour infiltration (CVI) process. The intrinsic catastrophic mode of failure of the brittle composite was prevented by application of single carbon and multiple coatings on fibers. Thinner coatings are sensitive to make fibers debonded and may improve the toughness of the composites.

AB - The mechanical behavior of ceramic matrix composites (CMC) is known to be strongly influenced by fiber-matrix interfacial properties and there have been many efforts to clarify the interfacial characteristics. To understand the fracture mechanism of the materials it is necessary to clarify how the cracks initiate and propagate among fibers, interphase (coating) and matrix. The objective of this study is to investigate crack initiation and growth characteristics in SiC/SiC composites with variations in coating thickness and coating methods by means of micro-indentation technique. Micro-indentation tests and hardness tests were carried out on SiC/SiC composites produced by the chemical vapour infiltration (CVI) process. The intrinsic catastrophic mode of failure of the brittle composite was prevented by application of single carbon and multiple coatings on fibers. Thinner coatings are sensitive to make fibers debonded and may improve the toughness of the composites.

UR - http://www.scopus.com/inward/record.url?scp=0032180903&partnerID=8YFLogxK

U2 - 10.1016/S0022-3115(98)00222-0

DO - 10.1016/S0022-3115(98)00222-0

M3 - Article

AN - SCOPUS:0032180903

SN - 0022-3115

VL - 258-263

SP - 1577

EP - 1581

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - PART 2 B

ER -

Crack initiation and growth characteristics in SiC/SiC under indentation test

Abstract

Access to Document

Other files and links

Fingerprint

Cite this