Ceramic composites: A review of toughening mechanisms and demonstration of micropillar compression for interface property extraction

Ceramic fiber–matrix composites (CFMCs) are exciting materials for engineering applications in extreme environments. By integrating ceramic fibers within a ceramic matrix, CFMCs allow an intrinsically brittle material to exhibit sufficient structural toughness for use in gas turbines and nuclear rea...

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Bibliographic Details
Published in:Journal of materials research Vol. 33; no. 4; pp. 424 - 439
Main Authors: Kabel, Joey, Hosemann, Peter, Zayachuk, Yevhen, Armstrong, David E. J., Koyanagi, Takaaki, Katoh, Yutai, Deck, Christian
Format: Journal Article
Language:English
Published: New York, USA Cambridge University Press 28.02.2018
Springer International Publishing
Springer Nature B.V
Materials Research Society
Subjects:
Applied and Technical Physics
Bending stresses
Biomaterials
Boron
Brittle materials
Carbon
Ceramic Composite
Ceramic fibers
Ceramic matrix composites
Ceramics
Chemical Vapor
Chemical vapor deposition
Coating
Coefficient of friction
Composite materials
Copyright
Crack propagation
Deposition
Ductility
Energy
Energy release rate
Environmental impact
Extreme environments
Fiber-matrix interfaces
Finite element method
Fracture
Fracture toughness
Gas turbine engines
Gas turbines
GENERAL STUDIES OF NUCLEAR REACTORS
Graphite
High temperature
Inorganic Chemistry
Interfaces
Interfacial properties
Internal Friction
Invited Feature Paper
Load
Materials Engineering
Materials research
MATERIALS SCIENCE
Microcracks
Nano-indentation
Nanotechnology
Neutron irradiation
Nuclear energy
Nuclear engineering
Nuclear Materials
Nuclear reactors
Oxidation
Physics
R&D
Radiation
Research & development
Shear strength
Theoretical physics
Toughening
Toughness
United States > US
Ceram
California
nuclear materials
nano-indentation
coating
internal friction
neutron irradiation
chemical vapor deposition
toughness
ceramic composite
fracture
ISSN:0884-2914, 2044-5326
Online Access:Get full text
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Summary:Ceramic fiber–matrix composites (CFMCs) are exciting materials for engineering applications in extreme environments. By integrating ceramic fibers within a ceramic matrix, CFMCs allow an intrinsically brittle material to exhibit sufficient structural toughness for use in gas turbines and nuclear reactors. Chemical stability under high temperature and irradiation coupled with high specific strength make these materials unique and increasingly popular in extreme settings. This paper first offers a review of the importance and growing body of research on fiber–matrix interfaces as they relate to composite toughening mechanisms. Second, micropillar compression is explored experimentally as a high-fidelity method for extracting interface properties compared with traditional fiber push-out testing. Three significant interface properties that govern composite toughening were extracted. For a 50-nm-pyrolytic carbon interface, the following were observed: a fracture energy release rate of ∼2.5 J/m2, an internal friction coefficient of 0.25 ± 0.04, and a debond shear strength of 266 ± 24 MPa. This research supports micromechanical evaluations as a unique bridge between theoretical physics models for microcrack propagation and empirically driven finite element models for bulk CFMCs.
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USDOE Office of Nuclear Energy (NE)
AC05-00OR22725
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2017.473