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Ultrafast high-temperature synthesis of bulk high-entropy oxide glasses.

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Title: Ultrafast high-temperature synthesis of bulk high-entropy oxide glasses.
Authors: Liang, Yihan1 (AUTHOR), Zhang, Hao1 (AUTHOR), Cao, Lei1 (AUTHOR), Wen, Bo1 (AUTHOR), Liu, Yijiang1 (AUTHOR), Xiao, Liang1 (AUTHOR), Jiang, Man1 (AUTHOR), Feng, Qingguo1 (AUTHOR), Hu, Chunfeng1 (AUTHOR) chfhu@live.cn
Source: Ceramics International. Dec2025:Part C, Vol. 51 Issue 29, p61995-62003. 9p.
Subjects: Amorphization, Chemical synthesis, Optical properties, Mechanical behavior of materials, Materials science, Thermal stability, Phase transitions
Abstract: High-entropy oxide glasses (HEOGs) offer superior mechanical and optical properties. However, their synthesis via conventional crucible melt-quenching method is challenged by their high melting points and strong crystallization tendencies. Here, we report the synthesis of La-Y-Ti-Zr-Al-O HEOGs in just 9–15 s using ultrafast high-temperature synthesis (UHS). Through interrupted quenching experiments, the amorphization, compositional evolution, and phase transformation of HEOGs during the UHS process were investigated. The UHS-prepared glasses are fully amorphous and compositionally homogeneous, exhibiting excellent mechanical properties, including high hardness (∼9.07 GPa) and superior fracture toughness (∼1.57 MPa m1/2), and high thermal stability comparable to those produced by the state-of-the-art aerodynamic levitation (ADL) technique. Notably, the reducing environment of UHS induces lower-valent cations (such as Ti3+) and oxygen-deficient centers in HEOGs, resulting in a unique black appearance and strong broadband absorption across the ultraviolet, visible, and near-infrared spectrum. This work clarifies the link between UHS process characteristics, defect chemistry, and the sample properties, offering a viable route for the rapid preparation of high-performance HEOGs. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 189412039
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Ultrafast high-temperature synthesis of bulk high-entropy oxide glasses.
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  Data: <searchLink fieldCode="AR" term="%22Liang%2C+Yihan%22">Liang, Yihan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Hao%22">Zhang, Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Lei%22">Cao, Lei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wen%2C+Bo%22">Wen, Bo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yijiang%22">Liu, Yijiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiao%2C+Liang%22">Xiao, Liang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Man%22">Jiang, Man</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Qingguo%22">Feng, Qingguo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Chunfeng%22">Hu, Chunfeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chfhu@live.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Dec2025:Part C, Vol. 51 Issue 29, p61995-62003. 9p.
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  Data: High-entropy oxide glasses (HEOGs) offer superior mechanical and optical properties. However, their synthesis via conventional crucible melt-quenching method is challenged by their high melting points and strong crystallization tendencies. Here, we report the synthesis of La-Y-Ti-Zr-Al-O HEOGs in just 9–15 s using ultrafast high-temperature synthesis (UHS). Through interrupted quenching experiments, the amorphization, compositional evolution, and phase transformation of HEOGs during the UHS process were investigated. The UHS-prepared glasses are fully amorphous and compositionally homogeneous, exhibiting excellent mechanical properties, including high hardness (∼9.07 GPa) and superior fracture toughness (∼1.57 MPa m1/2), and high thermal stability comparable to those produced by the state-of-the-art aerodynamic levitation (ADL) technique. Notably, the reducing environment of UHS induces lower-valent cations (such as Ti3+) and oxygen-deficient centers in HEOGs, resulting in a unique black appearance and strong broadband absorption across the ultraviolet, visible, and near-infrared spectrum. This work clarifies the link between UHS process characteristics, defect chemistry, and the sample properties, offering a viable route for the rapid preparation of high-performance HEOGs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ceramint.2025.10.417
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      – SubjectFull: Chemical synthesis
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      – SubjectFull: Optical properties
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      – SubjectFull: Thermal stability
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      – SubjectFull: Phase transitions
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              Text: Dec2025:Part C
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              Y: 2025
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