Results 161 to 170 of about 885 (219)
Materials characterisation and mechanical properties of Cf-UHTC powder composites [PDF]
Journal of the European Ceramic Society, 2019 Ultra-high temperature ceramic composites based on carbon fibre, Cf, preforms impregnated with hafnium diboride, HfB2, powder and then densified with carbon by chemical vapour infiltration, CVI, have been mechanically tested to measure the room ...
Jon Binner
exaly +2 more sources
High Temperature Mechanical Behavior of UHTC Coatings for Thermal Protection of Re-Entry Vehicles
Journal of Thermal Spray Technology, 2010 In this work, the high temperature mechanical properties of ultra high temperature ceramics (UHTC) coatings deposited by plasma spraying have been investigated; particularly the stress-strain relationship of ZrB(2)-based thick films has been evaluated by
Giovanni Pulci +2 more
exaly +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Thermal Shielding of a Re-Entry Vehicle by UHTC Materials
AIAA/CIRA 13th International Space Planes and Hypersonics Systems and Technologies Conference, 2005Re-entry vehicles with enhanced aerodynamic performances and high maneuverability require sharp leading edges for the wings, control surfaces and sharp tip of the fuselage nose where high localized heat fluxes occur. Ultra High Temperature Ceramics (UHTC) , e.g.
R. MONTI +2 more
openaire +2 more sources
FAILURE ASSESSMENT OF UHTC PLATE UNDER ELEVATED TEMPERATURE
Modern Physics Letters B, 2009In the present study, a theoretical model is presented to assess the failure temperature for ultra-high temperature ceramics (UHTCs). Unlike traditional thermal shock theory, the parameters, such as thermal expansion coefficient and Young's modulus, are considered a function of temperature in the present model. The oxide film of UHTCs is also believed
Zeng, Tao +4 more
openaire +2 more sources
Pressureless sintering of Ta0.8Hf0.2C UHTC in the presence of MoSi2
Ceramics International, 2013Abstract Ta0.8Hf0.2C ceramic has the highest melting point among the known materials (4000 °C). However, this high melting point makes the ceramic difficult to be sintered at temperatures lower than 2300 °C, pressurelessly. The purpose of this study is to consolidate Ta0.8Hf0.2C UHTC by pressureless sintering at 2000 °C using MoSi2 as sintering aid.
Seyed Amir Ghaffari +2 more
exaly +2 more sources
Thermo-structural behaviour of an UHTC made nose cap of a reentry vehicle
Acta Astronautica, 2009 In the frame of the technology project sharp hot structures (SHS), focused on the assessment of the applicability of ultra-high temperature ceramics (UHTCs) to the fabrication of high performance and SHS for reusable launch vehicles, the nose cap ...
Rosario Borrelli +2 more
exaly +2 more sources
CIRA activities on UHTC's: on-ground and in flight experimentations
17th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2011CIRA has been working since almost a decade on the possibility to use a new class of ceramic materials, the so called Ultra High Temperature Ceramics (UHTC’s), for space applications, and specifically for some critical parts of thermal protection systems.It is well known that sharp aerodynamic configurations could provide much more efficiency in ...
Roberto Gardi +3 more
openaire +1 more source
Aerothermodynamic study of UHTC-based thermal protection systems
Aerospace Science and Technology, 2005Abstract Computational Fluid Dynamics (CFD) simulations are coupled to a thermal analysis model to investigate the thermal response of the new Ultra High Temperature Ceramics (UHTC) being considered for Thermal Protection Systems (TPS) of future reusable re-entry vehicles.
Raffaele Savino, Mario De Stefano Fumo
exaly +3 more sources