Hetoroporous heterogeneous ceramics for reusable thermal protection systems

Ortona, Alberto; Badini, Claudio Francesco; Liedtke, V.; Wilhelmi, Christian; D’Angelo, Claudio; Gaia, Daniele; Fischer, Wolfgang

doi:10.1557/jmr.2013.70

Cited by 12 publications

(6 citation statements)

References 24 publications

(26 reference statements)

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“…To conclude, Si–SiC lattices are better suited in applications in which the gasses are flowing through during oxidation, because pressure drop will not change (e.g., porous burners or volumetric solar receivers). Si–SiC–ZrB 2 lattices are better suited for passive thermal protections systems …”

Section: Discussionmentioning

confidence: 99%

“…Ceramic foams (i.e., random network of interconnected struts with random shape) are commonly employed “as foamed” in several high‐temperatures applications such as porous burners, passive or active thermal protection systems, and solar receivers . During their design, only porosity and pore size can be varied to optimize material behavior: thermo fluid design with cellular materials is then accomplished assigning average properties to a representative volume .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Heat and Mass Transfer in Ceramic Lattices During High‐Temperature Oxidation

Aronovici

Bianchi²,

Ferrari³

et al. 2015

J. Am. Ceram. Soc.

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This work reports on the heat and mass transfer evolution of ceramic lattices during their oxidation at 1400°C and 1600°C in air. Si–SiC and Si–SiC–ZrB2 systems were employed as skeleton material because they, previously produced as monolithic bars, showed promising oxidation behavior at high temperatures. Regular arrays of tetrakaidecahedra were first designed by CAD, then 3D printed and finally converted into ceramic by replica technique followed by reactive silicon infiltration. The surface area of each sample was calculated and specific weight variations were evaluated as a function of time. During oxidation, effective thermal conductivity and pressure drop of each sample were measured. Finally, results were correlated with the phenomena occurring during high‐temperature oxidation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer in Ceramic Lattices During High‐Temperature Oxidation

Aronovici

Bianchi²,

Ferrari³

et al. 2015

J. Am. Ceram. Soc.

Self Cite

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“…The type of protection on any space-venturing vehicle or, more precisely, on any given area of a vehicle, depends largely on the magnitude and duration of the heat load as well as various operational considerations. In the broadest sense, thermal protection systems can be categorized into three major classes-passive methods, semi-passive methods, and active methods-based on their physicomechanical working principle for thermal management, which can be insulation, ablation, dissipation, or cooling, as shown in Figure 1 [11][12][13]. Uyanna and Najafi (2020) [11] presented a review gathering information regarding TPS methods and materials employed in different space missions throughout the years since the 1950s.…”

Section: Tps Classificationmentioning

confidence: 99%

Review of Ceramic Composites in Aeronautics and Aerospace: A Multifunctional Approach for TPS, TBC and DBD Applications

et al. 2023

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The quest for increased performance in the aeronautical and aerospace industries has provided the driving force and motivation for the research, investigation, and development of advanced ceramics. Special emphasis is therefore attributed to the ability of fine ceramics to fulfill an attractive, extreme, and distinguishing combination of application requirements. This is impelled by ensuring a suitable arrangement of thermomechanical, thermoelectric, and electromechanical properties. As a result, the reliability, durability, and useful lifetime extension of a critical structure or system are expected. In this context, engineered ceramic appliances consist of three main purposes in aeronautical and aerospace fields: thermal protection systems (TPS), thermal protection barriers (TBC), and dielectric barrier discharge (DBD) plasma actuators. Consequently, this research provides an extensive discussion and review of the referred applications, i.e., TPS, TBC, and DBD, and discusses the concept of multifunctional advanced ceramics for future engineering needs and perspectives.

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“…Ïîðèñòûå òâåðäûå òåëà â ñîâðåìåííîé òåõíèêå øèðîêî ïðèìåíÿþò â êà÷åñòâå êîíñòðóêöèîííûõ [1,2] è òåïëîèçîëÿöèîííûõ (â òîì ÷èñëå ñòðîèòåëüíûõ) ìàòåðèàëîâ [3,4,5]. Ê òàêèì òåëàì ïðèíàäëåaeèò áîëüøàÿ ãðóïïà êîìïîçèöèîííûõ ìàòåðèàëîâ (êîìïîçèòîâ), â êîòîðûõ âîçíèêíîâåíèå ïîðèñòîñòè îáóñëîâëåíî êàê òåõíîëîãè÷åñêèìè ïðîöåññàìè ïîäãîòîâêè è ñìåøåíèÿ êîìïîíåíòîâ êîìïîçèòà è ïîñëåäóþùåé ïîëèìåðèçàöèè ñâÿçóþùåãî [6], òàê è ýêñïëóàòàöèîííûìè óñëîâèÿìè, â òîì ÷èñëå ïðè çíàêîïåðåìåííûõ íàãðóçêàõ [7].…”

Section: ââåäåíèåunclassified

Two-sided Estimates of Thermal Conductivity Coefficient of a Porous Body Skeleton

Zarubin¹,

Novozhilova²,

Sergeeva³

2018

Mat. mat. model.

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Porous composite materials are widely used in engineering as structural and heat-insulating materials. The presence of pores in such materials is due to both the technology of their manufacture and the operating conditions.One of the most important factors in the process of designing products from a porous composite is the complex of thermophysical characteristics of the material. This characteristic determines the application area of the material.Among the thermophysical properties the leading role is played by the coefficient of thermal conductivity. This coefficient for some porous materials can be determined experimentally, however, in order to reduce the time and resources needed, a theoretical study of this characteristic is more relevant.Theoretical investigation of the thermal conductivity coefficient of a porous composite allows us to predict its possible values depending on the composition of the material and its porosity. Such information about the composite is necessary at various stages of working with the material from its preparation to the construction of a structure from it.There are many works devoted to approaches to the theoretical evaluation of the coefficient of thermal conductivity of a porous material. However, due to a significant spread of its values, an actual task is to construct guaranteed two-sided estimates of the possible values of this material characteristic.As is well known, there are some difficulties in constructing lower estimates of the properties of a porous material. In this paper, to overcome this difficulty, a modification of the structural model of the porous body was used in conjunction with the dual formulation of the stationary heat conduction problem in an inhomogeneous solid.The modification of the structural model of a porous body in this paper is as follows: a hollow spherical particle is replaced by a solid sphere with an equal external radius. The solid sphere in turn is represented by a composite ball consisting of an inner ball of some conventional material and an outer spherical layer of the carcass material of the porous body. The equivalent thermal conductivity of the material of the inner ball is to be determined.The modification of the structural model of the porous body proposed in the work allowed to obtain two-sided estimates of the possible value of this coefficient. Also, the obtained estimates were compared with unimprovable upper bound for this characteristic.The obtained results will allow us to predict two-sided estimates of the thermal conductivity coefficient of perspective heat-insulating and structural porous materials.

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Hetoroporous heterogeneous ceramics for reusable thermal protection systems

Abstract: Abstract

Cited by 12 publications

References 24 publications

Heat and Mass Transfer in Ceramic Lattices During High‐Temperature Oxidation

Heat and Mass Transfer in Ceramic Lattices During High‐Temperature Oxidation

Review of Ceramic Composites in Aeronautics and Aerospace: A Multifunctional Approach for TPS, TBC and DBD Applications

Two-sided Estimates of Thermal Conductivity Coefficient of a Porous Body Skeleton

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