Review of SiCf/SiCm corrosion, erosion and erosion-corrosion in high temperature helium relevant to GFR conditions

Fitzgerald, Kerr; Shepherd, D.

doi:10.1016/j.jnucmat.2017.09.010

Cited by 51 publications

(8 citation statements)

References 43 publications

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“…In addition to the complex load and water vapor environment, the materials are suffered damage from sand and dust, which are ingested into the engine by the intake air 2 . Silicon carbide fiber‐reinforced silicon carbide matrix composites (SiC f /SiC) are considered to be one of the most promising thermal structural materials in the next generation of aero‐engines due to their low density and excellent thermomechanical properties at high temperatures 3–5 . Coating an environmental barrier coating (EBC) on their surface can further improve the high temperature oxidation resistance of the SiC f /SiC composite 6–8 …”

Section: Introductionmentioning

confidence: 99%

“…2 Silicon carbide fiber-reinforced silicon carbide matrix composites (SiC f /SiC) are considered to be one of the most promising thermal structural materials in the next generation of aero-engines due to their low density and excellent thermomechanical properties at high temperatures. [3][4][5] Coating an environmental barrier coating (EBC) on their surface can further improve the high temperature oxidation resistance of the SiC f /SiC composite. [6][7][8] Generally, EBC is mainly composed of two parts with different functions.…”

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confidence: 99%

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In situ observation of environmental barrier coating against calcium–magnesium–alumina–silicate attack at elevated temperature

Yang

Zhang

et al. 2021

Int J Applied Ceramic Tech

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The service conditions of the hot-end components of aeroengines are extremely harsh. 1 In addition to the complex load and water vapor environment, the materials are suffered damage from sand and dust, which are ingested into the engine by the intake air. 2 Silicon carbide fiber-reinforced silicon carbide matrix composites (SiC f /SiC) are considered to be one of the most promising thermal structural materials in the next generation of aero-engines due to their low density and excellent thermomechanical properties at high temperatures. [3][4][5] Coating an environmental barrier coating (EBC) on their surface can further improve the high temperature oxidation resistance of the SiC f /SiC composite. [6][7][8] Generally, EBC is mainly composed of two parts with different functions. One layer made of rare earth silicates (such as Yb 2 SiO 5 , La 2 SiO 5 ) exposing to the environment acts as a thermal blocker of high heat flow at high temperature and an isolator for water-oxygen and corrosion gas; the other layer composed of Si acts as the bonding layer to relief the mismatch in coefficient of thermal expansion (CTE) between the composites and the outer coatings. [9][10][11][12] The main components of the ingested particles in the engines are calcium-magnesium-alumina-silicon (CMAS).

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

In situ observation of environmental barrier coating against calcium–magnesium–alumina–silicate attack at elevated temperature

Yang

Zhang

et al. 2021

Int J Applied Ceramic Tech

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“…SiC f /SiC m composites are likely prone to passive oxidation under high temperatures and high partial pressures of oxygen. The oxidation process of SiC f /SiC m composites is represented in terms of the following expressions [ 15 ]:

…”

Section: Resultsmentioning

confidence: 99%

Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiCf/SiCm Composites

Yang

Ditta

et al. 2020

Materials

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The influence of microstructure evolution on the dynamic mechanical properties, including storage modulus and internal friction, of the 2.5D SiCf/SiCm composites after high-temperature treatment (800 °C and 1400 °C) in the air was investigated by three-point bending vibration test. The effects of test frequency and amplitude on storage modulus and internal friction were also evaluated. The results show that as-prepared samples have maximum storage modulus and internal friction. However, the composites treated at 800 °C in the air have the minimum storage modulus due to a large number of defects produced within the composite structure, and the composites treated at 1400 °C have the minimum internal friction due to the formation of α-cristobalite in the interface between the matrix and fibers, resulting in stronger interface bonding. With regard to test conditions, the storage modulus is sensitive to amplitude but not frequency; however, the internal friction is sensitive to both frequency because of anelasticity and amplitude due to the static hysteresis.

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“…Combining the properties of the SiC fibers and the SiC ceramic, SiC f /SiC exhibits high performance characteristics, such as a high‐temperature resistance, high oxidation resistance, high hardness, high modulus, high corrosion resistance, high radiation resistance, and a low density. It is generally believed that SiC f /SiC are a promising high‐temperature material for aircraft turbines, steam turbines, and nuclear reactors …”

Section: Introductionmentioning

confidence: 99%

Oxidation and microstructure of SiC_f/SiC composites in moist air up to 1600°C by X‐ray tomographic characterization

Zhang

Bie

Pang³

et al. 2020

Int J Applied Ceramic Tech

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SiCf/SiC composites that possess PyC or BN interface layers were fabricated and then oxidized in moist air at 1000, 1200, 1400, and 1600°C. High‐resolution CT was used for capturing 3D images and quantifying the SiC phase, mesophase, and voids. The oxidation behavior and microstructural evolution of SiCf/SiC with PyC or BN interface are discussed in this study. The microstructure of the SiCf/SiC with a PyC layer was seriously damaged in moist air at high temperature, whereas the BN interface layer enhanced the oxidation resistance of the SiCf/SiC. These results are also confirmed by using XRD, oxidation mass gain, tensile testing, and SEM measurements. The results of the oxidation behavior and microstructural evolution for SiCf/SiC oxidized in dry air are also compared with the results of this study. Comparing the SiCf/SiC with a PyC interface layer, the composite with a BN interface layer oxidized in moist air exhibits a high void growth rate and a low SiO2 grain growth rate from 1000 to 1600°C. This work will provide guidance for predicting the service life of SiCf/SiC for multiscale damage rate models of materials at a local scale and will also provide guidance on the life service design of SiCf/SiC materials.

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Review of SiCf/SiCm corrosion, erosion and erosion-corrosion in high temperature helium relevant to GFR conditions

Cited by 51 publications

References 43 publications

In situ observation of environmental barrier coating against calcium–magnesium–alumina–silicate attack at elevated temperature

In situ observation of environmental barrier coating against calcium–magnesium–alumina–silicate attack at elevated temperature

Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiCf/SiCm Composites

Oxidation and microstructure of SiC_f/SiC composites in moist air up to 1600°C by X‐ray tomographic characterization

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Review of SiCf/SiCm corrosion, erosion and erosion-corrosion in high temperature helium relevant to GFR conditions

Cited by 51 publications

References 43 publications

In situ observation of environmental barrier coating against calcium–magnesium–alumina–silicate attack at elevated temperature

In situ observation of environmental barrier coating against calcium–magnesium–alumina–silicate attack at elevated temperature

Influence of High-Temperature Oxidation and Test Conditions on the Dynamic Mechanical Properties of 2.5D SiCf/SiCm Composites

Oxidation and microstructure of SiCf/SiC composites in moist air up to 1600°C by X‐ray tomographic characterization

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Oxidation and microstructure of SiC_f/SiC composites in moist air up to 1600°C by X‐ray tomographic characterization