Potential application of ceramic matrix composites to aero-engine components

Ohnabe, Hisaichi; Masaki, Shoju; Onozuka, Masakazu; Miyahara, Kaoru; Sasa, Tsutomu

doi:10.1016/s1359-835x(98)00139-0

Cited by 362 publications

(122 citation statements)

References 4 publications

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“…A significant enhancement in gas turbine efficiency leading to lower fuel consumption and a lower emission of NOx are anticipated with the implementation of CMCs in the gas turbine engines [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Application of High-Velocity Oxygen-Fuel (HVOF) Spraying to the Fabrication of Yb-Silicate Environmental Barrier Coatings

et al. 2017

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From the literature, it is known that due to their glass formation tendency, it is not possible to deposit fully-crystalline silicate coatings when the conventional atmospheric plasma spraying (APS) process is employed. In APS, rapid quenching of the sprayed material on the substrate facilitates the amorphous deposit formation, which shrinks when exposed to heat and forms pores and/or cracks. This paper explores the feasibility of using a high-velocity oxygen-fuel (HVOF) process for the cost-effective fabrication of dense, stoichiometric, and crystalline Yb 2 Si 2 O 7 environmental barrier coatings. We report our findings on the HVOF process optimization and its resultant influence on the microstructure development and crystallinity of the Yb 2 Si 2 O 7 coatings. The results reveal that partially crystalline, dense, and vertical crack-free EBCs can be produced by the HVOF technique. However, the furnace thermal cycling results revealed that the bonding of the Yb 2 Si 2 O 7 layer to the Silicon bond coat needs to be improved.

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Section: Introductionmentioning

confidence: 99%

Application of High-Velocity Oxygen-Fuel (HVOF) Spraying to the Fabrication of Yb-Silicate Environmental Barrier Coatings

et al. 2017

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“…Damage tolerance is achieved through the use of low shear strength fiber coatings that deflect cracks along the interfaces [1][2][3][4][5][6][7]. The multi-layered matrix was introduced in the new generations of SiC f /[Si-B-C] composites in order to improve the lifetime under medium and high temperatures thanks to the formation of sealant glasses [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…These applications require that the material can resist both severe conditions (temperatures up to 1200 ¥ C under air) and very long static loadings at intermediate temperatures (400-700 ¥ C during tens of thousands of hours). Various authors have studied the mechanical behavior of SiC f /SiC composites and the damage mechanisms occurring at high temperatures [1][2][3][4][5][6][7]. Now more information is needed at intermediate temperatures: the oxidation kinetics of the different constituents are complex, and the effect of matrix sealing on the lifetime of the composite has to be examined.…”

Section: Introductionmentioning

confidence: 99%

Identification of a Critical Time with Acoustic Emission Monitoring during Static Fatigue Tests on Ceramic Matrix Composites: Towards Lifetime Prediction

et al. 2016

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Non-oxide fiber-reinforced ceramic-matrix composites are promising candidates for some aeronautic applications that require good thermomechanical behavior over long periods of time. This study focuses on the behavior of a SiC f /[Si-B-C] composite with a self-healing matrix at intermediate temperature under air. Static fatigue experiments were performed below 600 ¥ C and a lifetime diagram is presented. Damage is monitored both by strain measurement and acoustic emission during the static fatigue experiments. Two methods of real-time analysis of associated energy release have been developed. They allow for the identification of a characteristic time that was found to be close to 55% of the measured rupture time. This critical time reflects a critical local energy release assessed by the applicability of the Benioff law. This critical aspect is linked to a damage phase where slow crack growth in fibers is prevailing leading to ultimate fracture of the composite.

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“…The industries are also interested in CMCs from the view point of the design and the industrial application. H. Ohnabe et al [9] and H. Kaya [10] introduced the application of CMCs to the aerospace engine and the automotive ceramic gas turbine. H. Ohya et al [11] also discussed the structural design of the aerospace engine using CMCs.…”

Section: Introductionmentioning

confidence: 99%

Prediction of stress-strain behavior of ceramic matrix composites using unit cell model

Suzuki

Ohtake

Otani

et al. 2015

MATEC Web of Conferences

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Abstract. In this study, the elastic modulus and the stress-strain curve of ceramic matrix composites (CMCs) were predicted by using the unit cell model that consists of fiber bundles and matrix. The unit cell model was developed based on the observation of cross sections of CMCs. The elastic modulus of CMCs was calculated from the results of finite element analysis using the developed model. The non-linear behavior of stressstrain curve of CMCs was also predicted by taking the degradation of the elastic modulus into consideration, where the degradation was related to the experimentally measured crack density in CMCs. The approach using the unit cell model was applied to two kinds of CMCs, and good agreement was obtained between the experimental and the calculated results.

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Potential application of ceramic matrix composites to aero-engine components

Cited by 362 publications

References 4 publications

Application of High-Velocity Oxygen-Fuel (HVOF) Spraying to the Fabrication of Yb-Silicate Environmental Barrier Coatings

Application of High-Velocity Oxygen-Fuel (HVOF) Spraying to the Fabrication of Yb-Silicate Environmental Barrier Coatings

Identification of a Critical Time with Acoustic Emission Monitoring during Static Fatigue Tests on Ceramic Matrix Composites: Towards Lifetime Prediction

Prediction of stress-strain behavior of ceramic matrix composites using unit cell model

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