A novel strategy for rapid fabrication of continuous carbon fiber reinforced (TiZrHfNbTa)C high-entropy ceramic composites: High-entropy alloy in-situ reactive melt infiltration

Guo, Wenjian; Hu, Jian; Fang, Wu; Ye, Yicong; Zhang, Shifeng; Bai, Shuxin

doi:10.1016/j.jeurceramsoc.2023.01.019

Cited by 22 publications

(5 citation statements)

References 23 publications

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“…The mechanical properties and high-temperature oxidation resistance of high-entropy ceramics prepared by such transition metal carbides are better than those of single-component ceramics, and they have good application prospects. [10][11][12][13] The preparation methods of high-entropy carbide ceramics are mainly divided into solid-phase reaction method, [14][15][16] liquid-phase reaction method, [17][18][19] in-situ reaction melting infiltration method, 20 and arc melting method. 21 Among them, the solid-phase reaction method mainly includes the mechanical alloy method, 14 carbothermal reduction method, 15 and magnesium thermal reduction method.…”

Section: Introductionmentioning

confidence: 99%

“…The preparation methods of high‐entropy carbide ceramics are mainly divided into solid‐phase reaction method, 14–16 liquid‐phase reaction method, 17–19 in‐situ reaction melting infiltration method, 20 and arc melting method 21 . Among them, the solid‐phase reaction method mainly includes the mechanical alloy method, 14 carbothermal reduction method, 15 and magnesium thermal reduction method 16 .…”

Section: Introductionmentioning

confidence: 99%

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Preparation of (Ti_0.2Zr_0.2Hf_0.2Nb_0.2Ta_0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Xie,

Miao,

Wan

et al. 2024

J Am Ceram Soc.

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Using citric acid, ethylene glycol, ZrOCl2·8H2O, HfOCl2·8H2O, TiCl4, NbCl5, and TaCl5 as raw materials, the (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C high‐entropy ceramic precursor was prepared by Pechini coordination polymerization method. The precursor and pyrolysis products were analyzed and characterized by different methods. The results showed that the precursor formed a chelate structure, which greatly improved the stability of the precursor, and was clear and transparent with moderate viscosity (30–50 mPa·s). At a low pyrolysis temperature of 1600°C, single‐phase (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C high‐entropy ceramic nanopowders with a ceramic yield of 50.8% can be obtained. The high‐entropy ceramic powder has high purity, a particle size of about 140–200 nm, and uniform element distribution. It is suitable for introduction into fiber‐reinforced ceramic matrix composite by precursor infiltration and pyrolysis (PIP) process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of (Ti_0.2Zr_0.2Hf_0.2Nb_0.2Ta_0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Xie,

Miao,

Wan

et al. 2024

J Am Ceram Soc.

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“…High-entropy carbide (HEC) ceramics, characterized by strong covalent bonds and high valence electron concentrations, have demonstrated to exhibit exceptional hardness (18~26 GPa) [1]. HEC ceramics are highly promising to be utilized as a novel category of wear-resistant materials for cutting tools and other demanding applications [2][3][4][5][6]. However, to achieve dense and single-phase HEC ceramics often necessitates high sintering temperatures exceeding 2000 ℃ [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Cr-assisted low-temperature densification of (Ti,Zr,Nb,Ta,Mo)C high-entropy carbides with ultrafine grain and enhanced hardness

Liu,

Liang,

Guo

et al. 2024

Journal of Advanced Ceramics

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While the use of low-melting-point metals as sintering aids for high-entropy carbide (HEC) ceramics has been well-established, their existence can compromise hardness due to residual metallic inclusions. This study demonstrates an innovative strategy to meet this challenge, where (Ti, Zr, Nb, Ta, Mo)C high-entropy carbide ceramics with ultrafine grain and enhanced hardness are obtained through Cr-metal-assisted spark plasma sintering at a temperature as low as 1600 ℃.

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“…Guo et al. prepared C/(Ti, Zr, Hf, Nb, Ta)C via the melt‐infiltration (MI) of Ti–Zr–Hf–Nb–Ta alloys using an arc heating furnace 38 . The authors also fabricated C/(Ti, Zr, Hf, Nb, Ta)C via the melt infiltration of a Ti–Zr alloy into a mixed powder (C, TiC, ZrC, HfC, NbC, TaC) that contained carbon fiber porous preforms 39 .…”

Section: Introductionmentioning

confidence: 99%

“…Guo et al prepared C/(Ti, Zr, Hf, Nb, Ta)C via the melt-infiltration (MI) of Ti-Zr-Hf-Nb-Ta alloys using an arc heating furnace. 38 The authors also fabricated C/(Ti, Zr, Hf, Nb, Ta)C via the melt infiltration of a Ti-Zr alloy into a mixed powder (C, TiC, ZrC, HfC, NbC, TaC) that contained carbon fiber porous preforms. 39 A dense matrix can be easily prepared using the MI method compared with CVI and PIP, making MI a desirable method for the fabrication of C/UHTCs.…”

Section: Introductionmentioning

confidence: 99%

Material design using calculation phase diagram for refractory high‐entropy ceramic matrix composites

Arai,

Saito,

Samizo

et al. 2024

Int J Applied Ceramic Tech

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To achieve Si‐free refractory ceramic matrix composites exposed to an oxidizing atmosphere at approximately 2000°C, a Ti–Zr–Mo ternary alloy melt‐infiltration (MI) method was developed for the production of carbon fiber‐reinforced refractory high‐entropy ceramic matrix composites (C/RHECs), with high‐entropy carbides serving as the matrix. This approach was designed using calculation phase diagrams (CALPHADs) and the calculation of thermodynamic parameters. The combination of CALPHAD and the calculation of alloy and carbon reactivity enabled the prediction of reaction and infiltration behavior into a preform comprising carbon fiber, carbon black, and transition metal carbide powders. Furthermore, C/RHECs featuring a (Ti, Zr, Hf, Nb, Ta, Nb, Mo)C matrix were experimentally fabricated through the Ti–Zr–Mo alloy MI method in accordance with the design. The arc‐wind tunnel tests on the C/RHECs conducted at approximately 2000°C revealed surfaces covered with complex oxides. The apparent oxidation rate of the C/RHECs was similar to that of Si‐containing ceramics and composites. These results indicate that complex oxides act as a barrier to oxygen diffusion toward unoxidized regions, making Si no longer essential for protecting materials from oxidation above 2000°C.

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A novel strategy for rapid fabrication of continuous carbon fiber reinforced (TiZrHfNbTa)C high-entropy ceramic composites: High-entropy alloy in-situ reactive melt infiltration

Cited by 22 publications

References 23 publications

Preparation of (Ti_0.2Zr_0.2Hf_0.2Nb_0.2Ta_0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Preparation of (Ti_0.2Zr_0.2Hf_0.2Nb_0.2Ta_0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Cr-assisted low-temperature densification of (Ti,Zr,Nb,Ta,Mo)C high-entropy carbides with ultrafine grain and enhanced hardness

Material design using calculation phase diagram for refractory high‐entropy ceramic matrix composites

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A novel strategy for rapid fabrication of continuous carbon fiber reinforced (TiZrHfNbTa)C high-entropy ceramic composites: High-entropy alloy in-situ reactive melt infiltration

Cited by 22 publications

References 23 publications

Preparation of (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Preparation of (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Cr-assisted low-temperature densification of (Ti,Zr,Nb,Ta,Mo)C high-entropy carbides with ultrafine grain and enhanced hardness

Material design using calculation phase diagram for refractory high‐entropy ceramic matrix composites

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Preparation of (Ti_0.2Zr_0.2Hf_0.2Nb_0.2Ta_0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor

Preparation of (Ti_0.2Zr_0.2Hf_0.2Nb_0.2Ta_0.2)C high‐entropy ceramic nanopowders via liquid‐phase precursor