Journal ArticleDOI
Tensile creep and rupture of 2D-woven SiC/SiC composites for high temperature applications
TLDR
In this paper, the tensile creep and rupture behavior of 2D-woven SiC fiber-reinforced SiC matrix composites with potential for advanced high temperature structural applications was determined in air at 1315 °C.Abstract:
The tensile creep and rupture behavior of 2D-woven SiC fiber-reinforced SiC matrix composites with potential for advanced high temperature structural applications was determined in air at 1315 °C. The results are compared to similar SiC/SiC data in the literature in order to understand the underlying creep and rupture mechanisms. Focus was placed on three different near-stoichiometric SiC fiber-types and three SiC-based matrix systems produced by different process routes. In general, the creep and rupture properties of the tested composites were primarily dictated by the creep resistance of the fiber-type, with the Sylramic-iBN fiber typically showing the best behavior. However, the type of matrix did have an effect on the composite creep and rupture lives due to load-sharing differences for the different matrix types and due to stoichiometry in the case of chemical vapor infiltration SiC matrices.read more
Citations
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Journal ArticleDOI
Fatigue of three advanced SiC/SiC ceramic matrix composites at 1200°C in air and in steam
TL;DR: In this article, the effects of steam on high-temperature fatigue performance of the ceramic-matrix composites are evaluated and tension-tension fatigue behavior was studied for fatigue stresses ranging from 80 to 160MPa in air and from 60 to 140 MPa in steam.
Journal ArticleDOI
Growth stress in SiO2 during oxidation of SiC fibers
TL;DR: In this article, a method to calculate growth stress in SiO2 scales formed during SiC fiber oxidation was developed, which was done for Hi-NicalonTM-S SiC fibers using previously measured Deal-Grove oxidation kinetics parameters.
Journal ArticleDOI
Damage analysis of thin 3D-woven SiC/SiC composite under low velocity impact loading
TL;DR: In this article, a 3D-woven SiC f /SiC samples were subjected to low velocity impact tests at room temperature and the extent of damage was evaluated with the help of optical microscopy.
ReportDOI
Growth Stress in SiO2 during Oxidation of SiC Fibers (Preprint)
TL;DR: In this paper, a method to calculate the three principal growth stresses in SiO2 scales formed during SiC fiber oxidation has been developed, assuming that the initial volume expansion at the SiC-SiO2 interface is three-dimensional and equal in all directions, and that subsequent SiO 2 shear stress relaxation is described by the stress-dependent Eyring viscosity model.
Journal ArticleDOI
Novel Cr2AlC MAX-phase/SiC fiber composites: Synthesis, processing and tribological response
TL;DR: In this paper, a new class of ceramic matrix composites based on Cr 2 AlC MAX-phase containing 5 and 10% of SiC fibers was developed, which presented high density (98.6%) with an excellent dispersion of the fibers within the matrix and a strong matrix/fiber interfase.
References
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Journal ArticleDOI
Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview
TL;DR: SiC-based ceramic matrix composites, consisting of carbon or SiC fibers embedded in a SiC-matrix, are tough ceramics when the fiber/matrix bonding is properly optimized through the use of a thin interphase.
Journal ArticleDOI
The physics and mechanics of fibre-reinforced brittle matrix composites
Anthony G. Evans,Frank W. Zok +1 more
TL;DR: In this paper, a review of the mechanical and structural performance of brittle matrix composites is presented, focusing on the stress/strain behaviour in tension and shear, the ultimate tensile strength and notch sensitivity, fatigue, stress corrosion and creep.
Journal ArticleDOI
Monotonic tension, fatigue and creep behavior of SiC-fiber-reinforced SiC-matrix composites: a review
TL;DR: In this article, the monotonic tension, fatigue and creep properties of SiC-fiber-reinforced SiCmatrix composites (SiC/SiC) have been reviewed.
Journal ArticleDOI
Fine diameter ceramic fibres
TL;DR: In this paper, a two phase oxide fibres composed of α-alumina and mullite are used for the reinforcement of ceramic matrices for use at very high temperatures.
Book ChapterDOI
SiC/SiC Composites for 1200°C and Above
TL;DR: In this article, the authors present information concerning processes and properties for five silicon carbide (SiC) fiber-reinforced SiC matrix composite systems recently developed by NASA that can operate under mechanical loading and oxidizing conditions for hundreds of hours at 1204, 1315, and 1427°C.