Mechanical and thermophysical properties of materials in HTGR fuel bundles

Lanin, A. G.; Zubarev, P. V.; Vlasov, Katja

doi:10.1007/bf00750973

Cited by 14 publications

(9 citation statements)

References 2 publications

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“…In [35], the NbC-ZrC solid-solution follows a trend similar to the individual NbC or ZrC. While the data for the ternary (Ta,Zr, Nb)C suggested that the behavior of the ternary ceramic is comparable to the data for the monolithic NbC [31,32] or NbC-ZrC [36] solid-solution, it also suggests that the magnitude for the solid-solution strengthening contribution.…”

Section: Mechanical Propertiesmentioning

confidence: 90%

“…Data of the temperature dependence for the strength of the individual monolithic TaC, TiC, and ZrC carbides are summarized in Figure 6 [31][32][33][34][35][36][37]. Within these monolithic carbides, data for titanium carbide [33,34] show why this monolithic carbide cannot be used for extremely high temperatures.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The flexural strength data of the binary or ternary carbides are limited by [36] and [8]. In [35], the NbC-ZrC solid-solution follows a trend similar to the individual NbC or ZrC.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Effect of temperature on the flexural strength of (Ta 1/3 Ti 1/3 Zr 1/3 )C prepared in this study. (a) provides variation in strength for TTZ ceramic and for selected monolithic carbides[31][32][33][34][35][36][37]. The closed symbols indicate that the strength was measured using a four-point setup and the open symbols show the results of the three-point flexural strength tests.…”

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confidence: 99%

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High-temperature toughening in ternary medium-entropy (Ta_1/3Ti_1/3Zr_1/3)C carbide consolidated using spark-plasma sintering

Demirskyi

Nishimura

Suzuki

et al. 2020

Journal of Asian Ceramic Societies

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Section: Mechanical Propertiesmentioning

confidence: 90%

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The flexural strength data of the binary or ternary carbides are limited by [36] and [8]. In [35], the NbC-ZrC solid-solution follows a trend similar to the individual NbC or ZrC.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

mentioning

confidence: 99%

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High-temperature toughening in ternary medium-entropy (Ta_1/3Ti_1/3Zr_1/3)C carbide consolidated using spark-plasma sintering

Demirskyi

Nishimura

Suzuki

et al. 2020

Journal of Asian Ceramic Societies

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“…Using the schedule presented for bulk Ta 0.2 Hf 0.8 C, that is, 2200°C for 40 min, we performed screening of the nearby area to the 20 mol.% TaC for the possible maxima in the flexural strength at 2000°C. In general, Figure 10 24,29 data for these specimens were lower or within the values measured for the Ta 0.2 Hf 0.8 C. Note that the number of specimens used for the screening of the 2000°C strength F I G U R E 8 Effect of the TaC addition on fracture toughness in the TaC-HfC system F I G U R E 9 Effect of temperature on flexural strength of selected ultra-hightemperature carbides [25][26][27][28] A survey of the published literature modeling of CMCs has been studied by a n ers. Processes that have been modeled CVD, 17,18 CVI, [19][20][21][22] and Sol-Gel Infiltrat of alumina matrix in eight-harness satin has been studied numerically in Ref.…”

Section: High-temperature Flexural Strengthmentioning

confidence: 75%

Deformation‐resistant Ta_0.2Hf_0.8C solid‐solution ceramic with superior flexural strength at 2000°C

et al. 2021

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Recent interest in high-temperature materials has increased the interest in the research of ultra-hightemperature ceramics (UHTC), which are known to have extremely high melting points above 3000°C. [1][2][3] Within typical carbide UHTCs, the TaC-HfC binary system still has the highest known measured melting point (>3990°C). 4,5 Thus, it is not surprising that studies were undertaken to produce bulk specimens in the TaC-HfC system. This was because of the high melting point of the solid-solution carbide densification and the formation of the binary solid-solution requiring temperatures exceeding 2000°C. 5 The study of Barraza et al. 5 observed that at room temperature, the 1:4, 1:1, and 4:1 HfC-TaC ceramics had high elastic moduli (450-550 GPa) and a moderate hardness of up to 20 GPa. Furthermore, of the three solid-solutions, the 1TaC:4HfC (Ta 0.2 Hf 0.8 C) solid-solution had the highest toughness of 3.4 ± 0.6 MPa m 1/2 , exceeding the toughness reported for the monolithic TaC. 5,6 Nevertheless, because of the exposure to temperatures above 2000°C using spark-plasma sintering (SPS), the grain growth control and achieving a density exceeding 98% of the theoretical density remain a challenge. This limits the data on potentially good high-temperature strength. Considering good high-temperature compressive creep, 7 one may expect that the properties, such as high-temperature toughness or flexural strength for the TaC-HfC system, will also be superior to the monolithic HfC or TaC bulks, as it is expected that solid-solution strengthening will play a role in determining the strength at elevated temperatures. [8][9][10] In this study, we focused on the consolidation and high-temperature strength and toughness of the

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Uranium and Uranium Compounds

Clark¹,

Keogh²,

Neu³

et al. 2000

Kirk-Othmer Encyclopedia of Chemical Technology

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An overview of uranium and uranium compounds with an emphasis on their relevance to chemical technology is provided. Uranium and its compounds have many uses both potential and applied, examples include nuclear fuel, radiation shielding, and kinetic energy penetrators. These uses have a substantial economic impact, the aspects of which are provided. Sections are provided which illustrate the occurrence, recovery, and radiochemistry of uranium as well as the properties and preparation of uranium metal. A broad overview of uranium coordination and organometallic compounds is also provided. Drawbacks to the application of uranium and uranium compounds in many processes include the chemical reactivity of the metal and the inherent radioactivity of uranium isotopes. As such, health and safety factors which must be taken into account while working with uranium are discussed.

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Mechanical and thermophysical properties of materials in HTGR fuel bundles

Cited by 14 publications

References 2 publications

High-temperature toughening in ternary medium-entropy (Ta_1/3Ti_1/3Zr_1/3)C carbide consolidated using spark-plasma sintering

High-temperature toughening in ternary medium-entropy (Ta_1/3Ti_1/3Zr_1/3)C carbide consolidated using spark-plasma sintering

Deformation‐resistant Ta_0.2Hf_0.8C solid‐solution ceramic with superior flexural strength at 2000°C

Uranium and Uranium Compounds

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Mechanical and thermophysical properties of materials in HTGR fuel bundles

Cited by 14 publications

References 2 publications

High-temperature toughening in ternary medium-entropy (Ta1/3Ti1/3Zr1/3)C carbide consolidated using spark-plasma sintering

High-temperature toughening in ternary medium-entropy (Ta1/3Ti1/3Zr1/3)C carbide consolidated using spark-plasma sintering

Deformation‐resistant Ta0.2Hf0.8C solid‐solution ceramic with superior flexural strength at 2000°C

Uranium and Uranium Compounds

Contact Info

Product

Resources

About

High-temperature toughening in ternary medium-entropy (Ta_1/3Ti_1/3Zr_1/3)C carbide consolidated using spark-plasma sintering

High-temperature toughening in ternary medium-entropy (Ta_1/3Ti_1/3Zr_1/3)C carbide consolidated using spark-plasma sintering

Deformation‐resistant Ta_0.2Hf_0.8C solid‐solution ceramic with superior flexural strength at 2000°C