Influence of surface fibre properties and textural organization of a pyrocarbon interphase on the interfacial shear stress of SiC/SiC minicomposites reinforced with Hi-Nicalon S and Tyranno SA3 fibres

Buet, E.; Sauder, Cédric; Sornin, Denis; Poissonnet, S.; Rouzaud, Jean-Noël; Vix‐Guterl, Cathie

doi:10.1016/j.jeurceramsoc.2013.08.027

Cited by 68 publications

(57 citation statements)

References 21 publications

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“…Ar and Cu peaks in the EDS signal are artifacts of the sample preparation method that uses argon ion milling of samples mounted on copper grids. As‐received Hi‐Nicalon™‐S fiber surfaces are very smooth, with at most 3‐5 nm of roughness amplitude from grain‐boundary grooving …”

Section: Resultsmentioning

confidence: 99%

SiC fiber strength after low pO₂ oxidation

Hay

2017

J Am Ceram Soc

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Hi‐Nicalon™‐S SiC fiber was heat treated for 1 hour at 1300°C, 1400°C, and 1500°C in argon with pO2 of 3.7, 10, 20, 50, 100, and 200 ppm. Fiber strengths were measured by 30 single‐filament tensile tests. Fiber microstructure and surface morphology were characterized by TEM. Active oxidation occurred in all cases except at 1500°C with 200 ppm pO2, 1400°C with 100 ppm pO2 or higher, and 1300°C with 50 ppm pO2 or higher. When active oxidation did not occur, a glass SiO2 scale formed at 1300°C and 1400°C, and a cristobalite scale formed at 1500°C. The thickness of these scales was much larger than that predicted by linear dependence of oxidation rate on pO2. Fiber strengths were lowest after heat treatment at 1300°C and a pO2 of 3.7 ppm, 1400°C and a pO2 of 20 ppm, and 1500°C and a pO2 of 200 ppm. Active oxidation caused fiber surface roughening, but no obvious changes to the internal fiber microstructure. Decreased fiber strength correlated with increased fiber surface roughness, but roughness magnitudes were not large enough to explain the amount by which strength was degraded. Fiber strengths, surface roughness, scale thicknesses, and the passive‐active oxidation transition for SiC are compared with previous observations. Possible strength degradation mechanisms are discussed.

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Section: Resultsmentioning

confidence: 99%

SiC fiber strength after low pO₂ oxidation

Hay

2017

J Am Ceram Soc

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“…The infiltration operations are performed with the CEA facilities (Saclay, LTMEx) using proper conditions established in previous studies [12,13]. After densification, the yarns (including about 500 fibers) reveal an elliptical cross section with an average area of 0.06 mm 2 .…”

Section: Methodsmentioning

confidence: 99%

Mechanical properties of SiC/SiC braided tubes for fuel cladding

Rohmer

Martín

Lorrette

2014

Journal of Nuclear Materials

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“…Up to now this approach has been used to study the mechanical/fatigue properties of CMCs with different commercial fibers including Nicalon and Hi-Nicalon at room/elevated temperatures [5][6][7][8][9]. However, most previous studies were mainly focused on SiC-fiber-reinforced composite systems, whereas the mechanical behavior and the corresponding modeling of C/SiC minicomposites has been little reported.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Mechanical Behavior of a Minicomposite Based on Grey Verhulst Models

Wang

2017

Ceramics - Silikaty

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Influence of surface fibre properties and textural organization of a pyrocarbon interphase on the interfacial shear stress of SiC/SiC minicomposites reinforced with Hi-Nicalon S and Tyranno SA3 fibres

Cited by 68 publications

References 21 publications

SiC fiber strength after low pO₂ oxidation

SiC fiber strength after low pO₂ oxidation

Mechanical properties of SiC/SiC braided tubes for fuel cladding

Prediction of the Mechanical Behavior of a Minicomposite Based on Grey Verhulst Models

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Influence of surface fibre properties and textural organization of a pyrocarbon interphase on the interfacial shear stress of SiC/SiC minicomposites reinforced with Hi-Nicalon S and Tyranno SA3 fibres

Cited by 68 publications

References 21 publications

SiC fiber strength after low pO2 oxidation

SiC fiber strength after low pO2 oxidation

Mechanical properties of SiC/SiC braided tubes for fuel cladding

Prediction of the Mechanical Behavior of a Minicomposite Based on Grey Verhulst Models

Contact Info

Product

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SiC fiber strength after low pO₂ oxidation

SiC fiber strength after low pO₂ oxidation