Oxidation-resistant carbon-fiber-reinforced ceramic-matrix composites

Lamouroux, F.; Bertrand, S.; Pailler, R.; Naslain, R.; Cataldi, Michel

doi:10.1016/s0266-3538(98)00146-8

Cited by 217 publications

(87 citation statements)

References 23 publications

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“…However, their fatigue behavior at high temperatures may be limited by the oxidation of the pyrocarbon interphase coating on the fibers. In order to protect the PyC interphase against oxidation, CVI SiC/SiC composites with multilayered matrices have been developed (CVI SiC/Si-B-C composites) [16]. Such multilayered matrices contain phases which produce sealants at high temperatures causing healing of the cracks and preventing oxygen from reaching the interphase [17].…”

Section: Historymentioning

confidence: 99%

“…This contributes to reducing the fatigue lifetime. In order to protect the PyC interphase against oxidation, multiple coating concepts have been explored and multilayered interphases and matrices have been developed [16]. Such multilayered matrices contain phases which produce sealants at high temperatures, causing healing of the cracks and preventing oxygen from reaching the cracks and the interphases [2,17,29].…”

Section: High Temperature Behaviormentioning

confidence: 99%

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Chemical Vapor Infiltrated SiC/SiC Composites (CVI SiC/SiC)

Lamon¹

2005

Handbook of Ceramic Composites

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CVI SiC/SiC composites are manufactured via Chemical Vapor Infiltration Process. The SiC-based matrices are deposited from gaseous reactants on to a heated substrate of SiC fiber preforms. An interphase coated on the fibers allows control of damage and mechanical behavior.The advantageous properties of CVI SiC/SiC composites such as their excellent high temperature strength, creep and corrosion resistances, low density, high toughness, resistance to shocks, fatigue and damage, and reliability make them ideal candidates for the replacement of metals and ceramics in many engineering applications involving loads, high temperatures and aggressive environments. Mechanical properties exhibit features that differentiate CVI SiC/SiC composites from monolithic ceramics and glasses, from other ceramic matrix composites and from other composites.

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Section: Historymentioning

confidence: 99%

Section: High Temperature Behaviormentioning

confidence: 99%

Chemical Vapor Infiltrated SiC/SiC Composites (CVI SiC/SiC)

Lamon¹

2005

Handbook of Ceramic Composites

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“…The issue of improving the oxidation resistance of the SiC/SiC composites has been addressed through the design of innovative multilayered interphases [10][11][12] and of self-healing multilayered matrices [10,[12][13][14][15][16]. The multilayered matrices contain phases that facilitate glass formation at high temperature thus healing the cracks and preventing oxygen from diffusing further into the composite and reaching the oxidation-prone fibers.…”

Section: Matec Web Of Conferencesmentioning

confidence: 99%

Creep behavior in interlaminar shear of a Hi-Nicalon^TM/ SiC-B₄C composite at 1200^∘C in air and in steam

Ruggles‐Wrenn

Pope

2015

MATEC Web of Conferences

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Abstract. Creep behavior in interlaminar shear of a non-oxide ceramic composite with a multilayered matrix was investigated at 1200 • C in laboratory air and in steam environment. The composite was produced via chemical vapor infiltration (CVI). The composite had an oxidation inhibited matrix, which consisted of alternating layers of silicon carbide and boron carbide and was reinforced with laminated Hi-Nicalon™ fibers woven in a five-harness-satin weave. Fiber preforms had pyrolytic carbon fiber coating with boron carbon overlay applied. The interlaminar shear properties were measured. The creep behavior was examined for interlaminar shear stresses in the 16-22 MPa range. Primary and secondary creep regimes were observed in all tests conducted in air and in steam. In air and in steam, creep run-out defined as 100 h at creep stress was achieved at 16 MPa. Similar creep strains were accumulated in air and in steam. Furthermore, creep strain rates and creep lifetimes were only moderately affected by the presence of steam. The retained properties of all specimens that achieved run-out were characterized. Composite microstructure, as well as damage and failure mechanisms were investigated. The tested specimens were also examined using electron probe microanalysis (EPMA) with wavelength dispersive spectroscopy (WDS). Analysis of the fracture surfaces revealed significant surface oxidation, but only trace amounts of boron and carbon. Cross sectional analysis showed increasing boron concentration in the specimen interior.

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“…During a mechanical loading, the studied material (SiC/SiC with PyC interphase and self-healing matrix as in [11]) undergoes a complex cracking pattern. When this cracking pattern penetrates the yarns, oxygen can reach the fibers.…”

Section: General Modeling Frameworkmentioning

confidence: 99%

Modeling framework and associated simulation tools for the prediction of damage tolerance of CMC

Baranger

2015

MATEC Web of Conferences

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Abstract.A modeling framework and the associated simulation tools are presented for the prediction of the mechanical behaviour and lifetime of CMC with self-healing matrix. A macroscopic anisotropic damage model enriched with micro information has been developed, identified and validated using experimental information at different levels including reaction kinetics, fiber failure probability or macroscopic mechanical behavior. The computational cost associated to the proposed model being quite expansive, a method has been setup to construct, automatically, reduced numerical constitutive laws. An illustration is given as well as the associated error estimation.With high manufacturing costs and moderated lifetimes at high temperatures, the use of CMC has been limited to military engine application. Nevertheless, recent developments on self-healing matrices have greatly increase their properties for long lifetimes. It is now possible to use them on civil engine applications in order to improve engine temperatures [1].A first family of models have been developped to predict the mechanical behaviour of CMC under static loadings at the macroscopic scale [2][3][4]. For low lifetimes up to 5 000 h, a purely experimental approach allowed, for a high cost, to handle the problem of certification in the military domain. For civil application (expected lifetimes greater than 50 000 h) within the framework of damage tolerance, a direct experimental strategy becomes unaffordable. It becomes necessary to use models in order to anticipate the long term behavior over the whole loading range. A second family of models has been developed at . The aim of these models is to predict the mechanical behavior but also the lifetime of the material. Loading cases accounted for in the model are static or cyclic mechanical loadings has well as thermal and chemical loadings (oxygen and steam pressures). To get robust results under multi-axial and multiphysic loadings, the model should rely on solid foundations. The aim of this paper is to present that kind of model and then how to implement and use them efficiently in a structural computation framework. First of all, note that a large amount of experimental information and models are available at different scales and on different mechanisms for this material [8][9][10]: from lifetimes on fibers to mechanical behavior on composite coupons by oxidation kinetics. a

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Oxidation-resistant carbon-fiber-reinforced ceramic-matrix composites

Cited by 217 publications

References 23 publications

Chemical Vapor Infiltrated SiC/SiC Composites (CVI SiC/SiC)

Chemical Vapor Infiltrated SiC/SiC Composites (CVI SiC/SiC)

Creep behavior in interlaminar shear of a Hi-Nicalon^TM/ SiC-B₄C composite at 1200^∘C in air and in steam

Modeling framework and associated simulation tools for the prediction of damage tolerance of CMC

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Oxidation-resistant carbon-fiber-reinforced ceramic-matrix composites

Cited by 217 publications

References 23 publications

Chemical Vapor Infiltrated SiC/SiC Composites (CVI SiC/SiC)

Chemical Vapor Infiltrated SiC/SiC Composites (CVI SiC/SiC)

Creep behavior in interlaminar shear of a Hi-NicalonTM/ SiC-B4C composite at 1200∘C in air and in steam

Modeling framework and associated simulation tools for the prediction of damage tolerance of CMC

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Creep behavior in interlaminar shear of a Hi-Nicalon^TM/ SiC-B₄C composite at 1200^∘C in air and in steam