Characterization and thermomechanical assessment of a SiC-sandwich material for Flow Channel Inserts in DCLL blankets

Soto, Carlota; Garcı́a-Rosales, C.; Echeberrı́a, J.; Platacis, E.; Shisko, A.A.; Muktepavela, F.; Malo, M.; Hernández, T.

doi:10.1016/j.fusengdes.2019.03.082

Cited by 26 publications

(22 citation statements)

References 15 publications

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“…However, the data at different sintering temperatures (samples with different grain morphologies) does not follow Equation (), indicating that the electrical resistivity of such ceramics also depends on the grain morphology (i.e., microstructure of strut) along with the porosity. Some works reported by other researchers 41,57,78 also showed some deviation from Equation (). Specifically, Ihle et al 57 .…”

Section: Factors Affecting Electrical Resistivity Of Porous Sic Ceramicsmentioning

confidence: 84%

“…reported that porous SiC ceramics sintered with 2–6 wt.% Al 2 O 3 –Y 2 O 3 show electrical resistivities (1.6 × 10 0 –2.0 × 10 3 Ω·cm) similar to those (1.7 × 10 0 –3.1 × 10 3 Ω·cm) of dense materials of the same type. Soto et al 41,78,79 . and Ordas et al 76 .…”

Section: Factors Affecting Electrical Resistivity Of Porous Sic Ceramicsmentioning

confidence: 98%

“…The electrical resistivity of porous SiC ceramics is affected by their porosity. Porous SiC ceramics exhibit a room temperature electrical resistivity of the order of 10 –1 –10 6 Ω·cm 30,31,37,41,57,76–79 . For example, the electrical resistivities of porous SiC ceramics sintered with 10 vol.% AlN‐Y 2 O 3 and 7wt.% Y 2 O 3 –La 2 O 3 are 1.3 × 10 –1 Ω·cm at 30.3% porosity 31 and 5.3 × 10 1 Ω·cm at 9.9% porosity, 37 respectively.…”

Section: Factors Affecting Electrical Resistivity Of Porous Sic Ceramicsmentioning

confidence: 99%

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Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

Anwar

Bukhari

et al. 2022

Int J Applied Ceramic Tech

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Porous silicon carbide (SiC)‐based ceramics are widely used in numerous applications of technical importance owing to their exceptional structural (e.g., excellent chemical, mechanical, and thermal stability) and functional (e.g., controlled electrical resistivity) properties. Porous SiC with controlled electrical resistivity is required for various advanced applications, for example, power electronic devices, semiconductor processing parts, fusion reactors, thermoelectric energy conversion, electromagnetic shielding, and environmental applications such as heatable filters. The electrical properties of sintered porous SiC are significantly affected by its chemical composition, processing conditions, and microstructure. This article reviews the influence of certain critical factors, such as the polytype, doping conditions, porosity (%), additive composition (oxide additives, element additives, metal nitride/carbide additives, etc.), and processing conditions on the electrical resistivity of porous SiC. Novel applications of porous SiC with controlled electrical resistivity are also discussed in this review.

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Section: Factors Affecting Electrical Resistivity Of Porous Sic Ceramicsmentioning

confidence: 84%

Section: Factors Affecting Electrical Resistivity Of Porous Sic Ceramicsmentioning

confidence: 98%

Section: Factors Affecting Electrical Resistivity Of Porous Sic Ceramicsmentioning

confidence: 99%

See 1 more Smart Citation

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

Anwar

Bukhari

et al. 2022

Int J Applied Ceramic Tech

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“…Their heat transfer process is well-known, and it is difficult to obtain significant increase in the heat transfer coefficient. Recently, the problem of designing new heat exchangers (for example with porous metals) has become urgent [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The use of porous metals in the design of heat exchangers to increase the intensity of heat exchange

2020

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Heat exchangers are widely used in heat supply systems. To increase the efficiency of heat supply systems, heat exchangers with porous metals are proposed to design. There was a test facility set up to study new types of heat exchangers. The countercurrent flow of heat carriers was activated in those heat exchangers. Freon moved through the heat exchanger pores, and water moved through the inner tubes. It should be noted that the porous materials in the heat exchangers differed in the coefficient of porosity. To be compared, one of the heat exchangers did not contain any porous material. The first test cycle proved the feasibility of using porous metals in heat exchange equipment. Afterwards, a simplified mathematical model of the heat exchanger was compiled. Such an analytical form makes a solution convenient for engineering calculations. Numerical calculations based on this model were compared with the experimental data. Heat transfer intensity of materials with different porosity was compared.

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“…The housing cross section is cylindrical round or oval. [4][5][6][7][8] There are original designs of evaporation elements, which are intended to cool bodies in various fields of industry. The evaporation element is made in a form of a three-layer wall adjacent to the heat transfer surface with boundary and middle layers having various porosities.…”

Section: Introductionmentioning

confidence: 99%

Heat-exchange units with porous inserts

et al. 2019

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Currently, porous metals are not used in heat supply systems. Usage of porous materials in heat exchangers increases the heat transfer intensity and makes the heat exchangers more compact. An experimental setup consisting of two circuits was developed in order to study the influence of porous metals on heat transfer intensity. In the first circuit the hot coolant is water, which flows through narrow tubes inside the porous metal. In the second circuit the cold coolant is freon. The purpose of the study is to obtain experimental confirmation of the hypothesis of an increase in the heat transfer intensity when using porous metals. To achieve this goal, experiments were carried out, which showed the increased heat transfer intensity. The standard methods for calculating heat exchangers cannot be applied in this case as the inner pores’ surface is unknown. A mathematical model was compiled allowing engineering calculations for the heat exchangers of this type. The hot water temperature inside the heat exchanger is determined analytically. The resulting equation allows us to determine the cooling degree of the first coolant, i.e. hot water. The obtained deviations between experimental and analytical data are within the acceptable limits, which indicates the reliability of the proposed model.

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Characterization and thermomechanical assessment of a SiC-sandwich material for Flow Channel Inserts in DCLL blankets

Cited by 26 publications

References 15 publications

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

The use of porous metals in the design of heat exchangers to increase the intensity of heat exchange

Heat-exchange units with porous inserts

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