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Ultra-high-temperature ceramics for transpiration cooling
2023Porous ultra-high-temperature ceramics (UHTCs) have been studied for their use in transpiration cooling of the leading edges of hypersonic vehicles. The envisioned design consists of a layered hybrid material: a dense UHTC substructure with channels providing coolant fluid to a partially sintered, permeable surface layer to evenly distribute coolant ...
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Processing Methods for Ultra High Temperature Ceramics
2013Ultra-high-temperature ceramics (UHTCs) are a group of materials that can withstand ultra high temperatures (1600-3000 oC) which will be encountered by future hypersonic re-entry vehicles. Future re-entry vehicles will have sharp edges to improve flight performance.
J.K. Sonber +4 more
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Ultra High Temperature Ceramic-Ceramic Composites
1989Abstract : The focus of this project is an understanding of the material stability and environmental degradation of potential diboride reinforced oxide matrix composites exposed to oxidizing conditions at ultrahigh temperature in the range of 1650 - 2100C. Particulate composites of 5w% ZrB2, in YS-ZrO2, Y203 and A1203, as well as of Sw% TiB2 in CaZrO3,
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Assessment of failure temperature of ultra-high temperature ceramic plates
Frontiers of Materials Science in China, 2010A theoretical model is presented to assess the failure temperature for ultra-high temperature ceramics (UHTCs). The parameters in the present work, such as thermal expansion coefficient and Young’s modulus, are considered functions of temperature to calculate the stress field of UHTCs under high temperature conditions. The critical elevated temperature
Tao Zeng, Shi Yan, Dai-Ning Fang, Yu Gao
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Plasma spray deposition of ultra high temperature ceramics
Surface and Coatings Technology, 2006Abstract An innovative, proprietary methodology was developed to produce, by plasma spraying deposition, a ceramic composite containing SiC particles dispersed in a ZrB2 matrix. With such a technique both coatings and free standing parts were fabricated.
Mario Tului +2 more
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Ultra-high temperature ceramics with exceptional strength at elevated temperature
2022Ultra-high temperature ceramics (UHTCs) are candidate materials for use in extreme environments owing to their melting point exceeding 3000°C and excellent ablation resistance. Despite the interesting combination of thermo-mechanical properties, they remain susceptible to brittle failure.
Laura Silvestroni +4 more
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Prospects for Ultra-High-Temperature Ceramic Composites
1986In the search to improve the efficiency and performance of existing devices and systems, there is a constant demand for structural materials that are stronger, more reliable, and have higher temperature capability. Other attributes are also often sought such as low cost and a lesser dependence on scarce elements.
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Ultra-high temperature ceramics for aerospace applications
2011Study of the effect of sintering aid and SiC chopped fibres on ZrB2 massive ceramics by analyzing the fracture toughness, crack propagation, strength and resistance to oxidation under aerodynamic ...
Bellosi, Alida (1) +4 more
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Processing of Ultra-High Temperature Ceramics for Hostile Environments
2013A detailed review of the processing of zirconium, hafnium, and tantalum based boride-carbide-nitride composites is presented. The processing methodology and important steps involved in producing a pore-free microstructure are reported. The effect of addition of secondary and ternary compounds on densification is highlighted as is the reactive ...
Lingappa Rangaraj +2 more
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Topical Issue on Ultra‐High‐Temperature Ceramics
Journal of the American Ceramic Society, 2008Joan Fuller +2 more
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