Studies of the effect of metal particles on the fracture toughness of ceramic matrix composites

Journal Article · Mon Dec 15 00:00:00 EST 2003 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2004.02.002· OSTI ID:20748731

Konopka, Katarzyna; Maj, Michal; Kurzydlowski, Krzysztof J

The purpose of this study was to describe the influence of metal particles on the fracture toughness of ceramic matrix composites. Here, alumina matrix composites with molybdenum particles have been investigated. The results presented show that the change of fracture toughness of a ceramic-metal composite can be controlled by the volume fraction of metallic phase and size of metal particles. The model proposed in this paper describes the change of crack length and as a consequence, the change of K{sub IC} value. The results of modelling calculations have been compared with experimentally measured K{sub IC} values. This model is useful for simulation of crack length changes in the composites and to design a material with an optimum fracture toughness.

• OSTI ID: 20748731
• Journal Information: Materials Characterization, Vol. 51, Issue 5; Other Information: DOI: 10.1016/j.matchar.2004.02.002; PII: S1044580304000427; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
CERAMICS
CRACKS
FRACTURE PROPERTIES
LENGTH
MICROSTRUCTURE
MOLYBDENUM
PARTICLES
SIMULATION