Multi-scale thermodynamic analysis method for 2D SiC/SiC composite turbine guide vanes

Liu, Xin; Shen, Xiuli; Gong, Longdong; Li, Peng

doi:10.1016/j.cja.2017.08.018

Cited by 33 publications

(5 citation statements)

References 18 publications

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“…В заключение стоит отметить, что в настоящее время уже имеются 2D SiC-структуры, сформированные на кремнии [38] и графене [39]. Особое место занимают композиты 2D SiC/SiC [40,41].…”

Section: заключениеunclassified

Низкоразмерные Структуры Карбида Кремния: Аналитические Оценки Характеристик Электронного Спектра

Давыдов¹

2020

Физика И Техника Полупроводников

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Методом функций Грина в представлении сильной связи рассмотрена электронная структура бесконечного листа карбида кремния и вырезанных из него нанолент и одномерных цепочек. Получены аналитические выражения для ширин запрещенных зон, эффективных масс и характерных скоростей электронов. Обсуждается влияние металлических и диэлектрических подложек на зонные характеристики. Ключевые слова: зонная структура, эффективная масса, характерная скорость, наноленты, цепочки, подложка.

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Section: заключениеunclassified

Низкоразмерные Структуры Карбида Кремния: Аналитические Оценки Характеристик Электронного Спектра

Давыдов¹

2020

Физика И Техника Полупроводников

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“…These multiphase nanoparticles undergo sintering, resulting in a distinctive distribution structure within the CMC components, endowed with enhanced toughness and strength [13,14]. Recent years have witnessed the utilization of advanced CMC materials in sophisticated components such as brake discs for high-speed rail, combustor liners and guide vanes for aero-engines, etc [15]. However, almost all the applications of CMCs in industry are in component (bulk materials) level, where the thin film CMC application is relatively rare, because the conventional thin film deposition techniques are not compatible with composite thin film preparation [16].…”

Section: Introductionmentioning

confidence: 99%

SiOC matrix nanocomposite films with self-gradient properties fabricated by laser sintering of hybrid nanoparticles

Chen,

Qiu,

Zhang

et al. 2024

Preprint

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The reinforced ceramics, known as ceramic matrix composites (CMCs), is playing an important role in modern advanced industrial applications. However, the fabrication of CMCs with both high toughness and high stiffness, which are normally considered mutually exclusive, is still challenging. Here, we develop a gradient property SiOC composite film reinforced with nanoscale tungsten-based particles using a novel avenue of the integration of hybrid nanoparticles inkjet printing and selective laser sintering. Mechanical results of SiOC-WOx films exhibit the stiffness-toughness co-enhancement, including a twofold improvement in hardness and modulus, and an over 3.8-fold better fracture toughness performance than its matrix. Moreover, owing to the metal-to-ceramic gradient properties, the films exhibit interfacial bonding strengths up to 86.6 MPa and operate stably even at 1050 ℃. Characterization results show that the excellent mechanical and interfacial performance is attributed to the significant gradient composition and uniformly dispersed self-assembled nanoscale reinforcing particles. The success of SiOC-WOx CMC films demonstrates the potential to accelerate the discovery of revolutionary nanocomposites using hybrid nanoparticles and bottom-up additive manufacturing processes.

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“…The all‐oxide composites are an inappropriate candidate for the thermal structural parts due to their insufficient mechanical properties (mainly strength and toughness) 3–5 . SiC f /SiC composites are considered as one of the candidates for thermal structural materials, as SiC f /SiC composites have a range of advantages, including low density, excellent oxidation resistance, and mechanical properties 6–8 . However, above 1600°C, the intensification of oxidation limits the application of SiC/SiC composites at higher temperatures 9 .…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5] SiC f /SiC composites are considered as one of the candidates for thermal structural materials, as SiC f /SiC composites have a range of advantages, including low density, excellent oxidation resistance, and mechanical properties. [6][7][8] However, above 1600 • C, the intensification of oxidation limits the application of SiC/SiC composites at higher temperatures. 9 Amounts of literature have revealed that the ultra-high temperature ceramics (UHTCs)-modified SiC has an excellent ablation resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of slurry and sol‐gel introduce SiC_nws on ablation and bending behaviors of modified SiC_f/HfC‐SiC composites

Hou

Wei²,

Yang³

et al. 2022

Int J Applied Ceramic Tech

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The slurry and sol‐gel methods were used to introduce SiC nanowires (SiCnws) into the SiCf/HfC‐SiC composites. The microstructures, ablation, and bending behaviors of the SiCnws modified composites prepared by the two methods were compared. The bending strengths of the modified composites obtained by introducing SiCnws by the slurry and sol‐gel methods were 224 ± 19 and 154 ± 14 MPa, respectively. The results showed that SiC fibers with chemical corrosion and thermal damage during the sol‐gel process decreased the bending strength of the SiCnws‐modified SiCf/HfC‐SiC composites. Meanwhile, the pyrolytic carbon interface accompanying corrosion damage in the sol‐gel process led to the degradation of interface function, which hindered the interface debonding and fiber sliding of the composites during the bending test. After ablation, the bending strengths of the two composites were 188 ± 19 and 50 ± 7 MPa, respectively. The bending strength retention of the modified composites fabricated by the slurry method (83.9%) was higher than that (32.5%) of the composites fabricated by the sol‐gel method after ablation. As the composites fabricated by the slurry method exhibited a good ablation resistance under the oxyacetylene flame (∼2350°C).

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Multi-scale thermodynamic analysis method for 2D SiC/SiC composite turbine guide vanes

Cited by 33 publications

References 18 publications

Низкоразмерные Структуры Карбида Кремния: Аналитические Оценки Характеристик Электронного Спектра

Низкоразмерные Структуры Карбида Кремния: Аналитические Оценки Характеристик Электронного Спектра

SiOC matrix nanocomposite films with self-gradient properties fabricated by laser sintering of hybrid nanoparticles

Effect of slurry and sol‐gel introduce SiC_nws on ablation and bending behaviors of modified SiC_f/HfC‐SiC composites

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Multi-scale thermodynamic analysis method for 2D SiC/SiC composite turbine guide vanes

Cited by 33 publications

References 18 publications

Низкоразмерные Структуры Карбида Кремния: Аналитические Оценки Характеристик Электронного Спектра

Низкоразмерные Структуры Карбида Кремния: Аналитические Оценки Характеристик Электронного Спектра

SiOC matrix nanocomposite films with self-gradient properties fabricated by laser sintering of hybrid nanoparticles

Effect of slurry and sol‐gel introduce SiCnws on ablation and bending behaviors of modified SiCf/HfC‐SiC composites

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Effect of slurry and sol‐gel introduce SiC_nws on ablation and bending behaviors of modified SiC_f/HfC‐SiC composites