Article(id=1321945243235237982, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1321944922048016891, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20250517, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1751212800000, receivedDateStr=2025-06-30, revisedDate=1752336000000, revisedDateStr=2025-07-13, acceptedDate=null, acceptedDateStr=null, onlineDate=1793105906542, onlineDateStr=2026-10-27, pubDate=1771516800000, pubDateStr=2026-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793105906542, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793105906542, creator=13701087609, updateTime=1793105906542, updator=13701087609, issue=Issue{id=1321944922048016891, tenantId=1146029695717560320, journalId=1263187385517883426, year='2026', volume='54', issue='2', pageStart='351', pageEnd='820', issueExtLink='null', onlineDate='null', pubDate='1769097600000', pubDateStr='2026-01-23', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793105829965, creator='13701087609', updateTime=1793105829965, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=414, endPage=427, ext={EN=ArticleExt(id=1321945245231726688, articleId=1321945243235237982, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Research Progress on Microstructure Evolution and Mechanical Properties of Ultra-High Temperature Oxide Eutectic Ceramics Solidified by High Temperature Gradient Solidification, columnId=1321894938464333923, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue on Mid-term Achievement of Key Program of National Natural Science Foundation—Review, runingTitle=null, highlight=null, articleAbstract=

The research and development of ultrahigh-temperature structural materials and advanced preparation technologies that can work stably in extreme environments at >1600 ℃ for a long time is a fundamental guarantee for improving the thrust weight ratio, prolonging the service life and enhancing the reliability of aircraft engines, and become a strategic focus of international competition. At high melting points, high strength, and excellent oxidation and corrosion resistance, ultra-high temperature oxide ceramics are regarded as one of the most promising high-temperature structural materials in high-temperature oxidation environments. However, the microstructure of oxide ceramics prepared by conventional powder sintering technology shows typical polycrystalline structure characteristics. Structural defects (i.e., grain boundary glass phases and weak bonding interfaces) seriously weaken the high-temperature strength, structural stability, and creep resistance of oxide ceramics, making it difficult to fully demonstrate the superior oxidation resistance and corrosion resistance of oxide ceramics in high-temperature and oxygen-enriched environments. In recent years, alumina-based eutectic ceramics prepared by directional solidification technology, based on the principle of liquid-solid transformation, have shown a breakthrough in the field of advanced structural materials. This technology diverges from the conventional ceramic sintering concept and achieves a creative combination of melt growth technology and the exceptional properties of oxide ceramics. However, the solidification characteristics of oxide eutectic ceramics under high-temperature gradients are not well understood, and the forming technology for large-size components is not yet mature. The poor thermal conductivity and high melt viscosity of oxides make it easy to produce solidification defects, such as cracks, pores, and segregation, during the solidification process. The eutectic phases of oxide grown in small planes show an intense anisotropy in microstructure and properties, but they cannot achieve precise control of crystal orientation. The poor toughness of oxide eutectic ceramics also limits their application process.

In this review, the principle and development status of four solidification forming technologies, including the Czochralski method, laser suspension zone melting, laser directional energy deposition, and laser powder bed melting, are summarized, and the formation mechanism and control strategy of defects in the solidification process are also represented. This review focuses on the solidification structure evolution and homogenization method of oxide eutectic ceramics, as well as the influencing factors and control mechanism of crystal orientation selection, as well as the research progress of room- temperature/high-temperature mechanical properties and failure mechanism, high-temperature microstructure stability and high-temperature CMAS corrosion properties of oxide ceramics. Finally, the development trend of high-temperature oxide eutectic ceramics in three aspects of high gradient solidification forming, non-equilibrium solidification defect suppression and multi-level synergistic strengthening and toughening is prospected.

A high-gradient directional solidification and complex component laser additive manufacturing technology for ultra-high temperature alumina-based eutectic ceramics is established. The mechanisms of defect formation during the solidification process is revealed. This research enables the efficient fabrication of high-density, large-sized, and ultra-fine eutectic ceramic samples, as well as complex components. The non-equilibrium rapid solidification microstructural characteristics and evolution mechanisms of multi-phase oxide eutectic ceramics are revealed. The eutectic-dendrite transition rate and the range of the eutectic coexistence zone are obtained. The crystal orientation selection and competitive growth patterns induced by seed crystals in eutectic ceramics are elucidated. A stable coupled growth model for the faceted eutectic ceramics is established. The evolution mechanisms of high-temperature performance of eutectic ceramics under extreme oxidative corrosion conditions are elucidated. The fabricated porous eutectic ceramics (porosity of 34%) achieve a high bending strength that is an international record (i.e., 497 MPa at room temperature; 324 MPa at 1500 ℃). The high-density eutectic ceramics exhibit a bending strength of up to 2500 MPa at room temperature. After 500-h thermal exposure at 1500 ℃, the microstructural coarsening rate is ≤0.002 μm/h, and the corrosion depth from molten oxide exposure at 1500 ℃ for 100 h is ≤130 μm, demonstrating a superior high-temperature mechanical and environmental performance.

Summary and Prospects

Ultra-high temperature oxide eutectic ceramics have superior oxidation resistance, corrosion resistance, microstructure stability, and high-temperature mechanical properties. They are expected to be one of the new high-temperature structural candidate materials, serving for an extended period in high-temperature oxidation-corrosion environments. However, the engineering application of oxide eutectic ceramics faces key bottleneck problems, including the immature forming technology for large-size, complex eutectic ceramic components, the difficulty in inhibiting solidification defects, and low toughness. It is thus necessary to continue to promote the research process of the integration of shape control and property control of large-scale complex components of oxide eutectic ceramics, mainly in the following three aspects, i.e., 1) It is urgent to develop efficient solidification forming technology for large-scale complex ceramic components, and explore the solidification characteristics of high melting point multi-phase oxide eutectic ceramics under high temperature gradient; 2) The effects of process parameters and component size on eutectic structure and solidification defects under non-equilibrium solidification conditions should be explored, and the methods of microstructure refinement and solidification structure inhibition should be established; and 3) It is necessary to clarify the failure mechanism of oxide eutectic ceramics and develop a multi-scale strengthening and toughening technology suitable for high melting point ceramic materials to achieve a synergistic improvement of the strength and toughness of eutectic ceramics.

, authors=Hao JIANG, Haijun SU, Minghui YU, Ruotong WANG, Zhonglin SHEN, Yinuo GUO, Zhuo ZHANG, Min GUO, authorsList=Hao JIANG, Haijun SU, Minghui YU, Ruotong WANG, Zhonglin SHEN, Yinuo GUO, Zhuo ZHANG, Min GUO, authorCompany=null, correspAuthors=Haijun SU, authorNote=

JIANG Hao (1996-), male, Doctoral candidate. E-mail:

, correspAuthorsNote=
SU Haijun (1981-), male, Ph.D., Professor. E-mail:
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为满足航空发动机等高端装备对超高温结构材料的严苛需求,基于熔体生长,兼具高熔点、优异抗氧化/耐腐蚀性能的氧化物共晶陶瓷已成为高温长时服役的关键候选材料。然而,如何突破氧化物共晶陶瓷大尺寸构件成形、凝固缺陷控制、强各向异性小平面共晶取向调控、以及强韧化等是推进该类材料工程化应用的关键。本文概述了提拉法、激光悬浮区熔、激光定向能量沉积及激光粉末床熔融4种制备超高温氧化物共晶陶瓷凝固成形技术的原理与发展现状,介绍了凝固过程中缺陷的形成机理和控制策略。重点阐述了氧化物共晶陶瓷的凝固组织演变规律与均细化调控方法、晶体取向选择影响因素和调控机制,以及氧化物共晶陶瓷的室温/高温力学性能与失效机理、高温组织稳定性及高温熔盐腐蚀性能研究进展。最后,展望了超高温氧化物共晶陶瓷在高梯度凝固成形、非平衡凝固缺陷抑制和多级协同强韧化3个方面的发展趋势。

, authors=姜浩, 苏海军, 余明辉, 王若彤, 申仲琳, 郭一诺, 张卓, 郭敏, authorsList=姜浩, 苏海军, 余明辉, 王若彤, 申仲琳, 郭一诺, 张卓, 郭敏, authorCompany=null, correspAuthors=苏海军, authorNote=

姜浩(1996—),男,博士研究生。

, correspAuthorsNote=
苏海军(1981—),男,博士,教授。
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姜浩(1996—),男,博士研究生。

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高温度梯度凝固成形超高温氧化物共晶陶瓷组织演变及力学性能研究进展
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姜浩 , 苏海军 , 余明辉 , 王若彤 , 申仲琳 , 郭一诺 , 张卓 , 郭敏
硅酸盐学报 | 国家自然科学基金重点项目中期成果专题—综合评述 2026,54(2): 414-427
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硅酸盐学报 |国家自然科学基金重点项目中期成果专题—综合评述 2026 , 54 (2) : 414 -427
高温度梯度凝固成形超高温氧化物共晶陶瓷组织演变及力学性能研究进展
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姜浩 , 苏海军 , 余明辉, 王若彤, 申仲琳, 郭一诺, 张卓, 郭敏
作者信息
  • 西北工业大学,凝固技术全国重点实验室,西安 710072
通讯作者:
苏海军(1981—),男,博士,教授。
作者简介:

姜浩(1996—),男,博士研究生。

Research Progress on Microstructure Evolution and Mechanical Properties of Ultra-High Temperature Oxide Eutectic Ceramics Solidified by High Temperature Gradient Solidification
Hao JIANG , Haijun SU , Minghui YU, Ruotong WANG, Zhonglin SHEN, Yinuo GUO, Zhuo ZHANG, Min GUO
Affiliations
  • State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
  • Corresponding Author:
    SU Haijun (1981-), male, Ph.D., Professor. E-mail:

    JIANG Hao (1996-), male, Doctoral candidate. E-mail:

出版时间: 2026-02-20 doi: 10.14062/j.issn.0454-5648.20250517
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为满足航空发动机等高端装备对超高温结构材料的严苛需求,基于熔体生长,兼具高熔点、优异抗氧化/耐腐蚀性能的氧化物共晶陶瓷已成为高温长时服役的关键候选材料。然而,如何突破氧化物共晶陶瓷大尺寸构件成形、凝固缺陷控制、强各向异性小平面共晶取向调控、以及强韧化等是推进该类材料工程化应用的关键。本文概述了提拉法、激光悬浮区熔、激光定向能量沉积及激光粉末床熔融4种制备超高温氧化物共晶陶瓷凝固成形技术的原理与发展现状,介绍了凝固过程中缺陷的形成机理和控制策略。重点阐述了氧化物共晶陶瓷的凝固组织演变规律与均细化调控方法、晶体取向选择影响因素和调控机制,以及氧化物共晶陶瓷的室温/高温力学性能与失效机理、高温组织稳定性及高温熔盐腐蚀性能研究进展。最后,展望了超高温氧化物共晶陶瓷在高梯度凝固成形、非平衡凝固缺陷抑制和多级协同强韧化3个方面的发展趋势。

氧化物共晶陶瓷  /  凝固成形  /  组织演变  /  性能调控

The research and development of ultrahigh-temperature structural materials and advanced preparation technologies that can work stably in extreme environments at >1600 ℃ for a long time is a fundamental guarantee for improving the thrust weight ratio, prolonging the service life and enhancing the reliability of aircraft engines, and become a strategic focus of international competition. At high melting points, high strength, and excellent oxidation and corrosion resistance, ultra-high temperature oxide ceramics are regarded as one of the most promising high-temperature structural materials in high-temperature oxidation environments. However, the microstructure of oxide ceramics prepared by conventional powder sintering technology shows typical polycrystalline structure characteristics. Structural defects (i.e., grain boundary glass phases and weak bonding interfaces) seriously weaken the high-temperature strength, structural stability, and creep resistance of oxide ceramics, making it difficult to fully demonstrate the superior oxidation resistance and corrosion resistance of oxide ceramics in high-temperature and oxygen-enriched environments. In recent years, alumina-based eutectic ceramics prepared by directional solidification technology, based on the principle of liquid-solid transformation, have shown a breakthrough in the field of advanced structural materials. This technology diverges from the conventional ceramic sintering concept and achieves a creative combination of melt growth technology and the exceptional properties of oxide ceramics. However, the solidification characteristics of oxide eutectic ceramics under high-temperature gradients are not well understood, and the forming technology for large-size components is not yet mature. The poor thermal conductivity and high melt viscosity of oxides make it easy to produce solidification defects, such as cracks, pores, and segregation, during the solidification process. The eutectic phases of oxide grown in small planes show an intense anisotropy in microstructure and properties, but they cannot achieve precise control of crystal orientation. The poor toughness of oxide eutectic ceramics also limits their application process.

In this review, the principle and development status of four solidification forming technologies, including the Czochralski method, laser suspension zone melting, laser directional energy deposition, and laser powder bed melting, are summarized, and the formation mechanism and control strategy of defects in the solidification process are also represented. This review focuses on the solidification structure evolution and homogenization method of oxide eutectic ceramics, as well as the influencing factors and control mechanism of crystal orientation selection, as well as the research progress of room- temperature/high-temperature mechanical properties and failure mechanism, high-temperature microstructure stability and high-temperature CMAS corrosion properties of oxide ceramics. Finally, the development trend of high-temperature oxide eutectic ceramics in three aspects of high gradient solidification forming, non-equilibrium solidification defect suppression and multi-level synergistic strengthening and toughening is prospected.

A high-gradient directional solidification and complex component laser additive manufacturing technology for ultra-high temperature alumina-based eutectic ceramics is established. The mechanisms of defect formation during the solidification process is revealed. This research enables the efficient fabrication of high-density, large-sized, and ultra-fine eutectic ceramic samples, as well as complex components. The non-equilibrium rapid solidification microstructural characteristics and evolution mechanisms of multi-phase oxide eutectic ceramics are revealed. The eutectic-dendrite transition rate and the range of the eutectic coexistence zone are obtained. The crystal orientation selection and competitive growth patterns induced by seed crystals in eutectic ceramics are elucidated. A stable coupled growth model for the faceted eutectic ceramics is established. The evolution mechanisms of high-temperature performance of eutectic ceramics under extreme oxidative corrosion conditions are elucidated. The fabricated porous eutectic ceramics (porosity of 34%) achieve a high bending strength that is an international record (i.e., 497 MPa at room temperature; 324 MPa at 1500 ℃). The high-density eutectic ceramics exhibit a bending strength of up to 2500 MPa at room temperature. After 500-h thermal exposure at 1500 ℃, the microstructural coarsening rate is ≤0.002 μm/h, and the corrosion depth from molten oxide exposure at 1500 ℃ for 100 h is ≤130 μm, demonstrating a superior high-temperature mechanical and environmental performance.

Summary and Prospects

Ultra-high temperature oxide eutectic ceramics have superior oxidation resistance, corrosion resistance, microstructure stability, and high-temperature mechanical properties. They are expected to be one of the new high-temperature structural candidate materials, serving for an extended period in high-temperature oxidation-corrosion environments. However, the engineering application of oxide eutectic ceramics faces key bottleneck problems, including the immature forming technology for large-size, complex eutectic ceramic components, the difficulty in inhibiting solidification defects, and low toughness. It is thus necessary to continue to promote the research process of the integration of shape control and property control of large-scale complex components of oxide eutectic ceramics, mainly in the following three aspects, i.e., 1) It is urgent to develop efficient solidification forming technology for large-scale complex ceramic components, and explore the solidification characteristics of high melting point multi-phase oxide eutectic ceramics under high temperature gradient; 2) The effects of process parameters and component size on eutectic structure and solidification defects under non-equilibrium solidification conditions should be explored, and the methods of microstructure refinement and solidification structure inhibition should be established; and 3) It is necessary to clarify the failure mechanism of oxide eutectic ceramics and develop a multi-scale strengthening and toughening technology suitable for high melting point ceramic materials to achieve a synergistic improvement of the strength and toughness of eutectic ceramics.

oxide eutectic ceramics  /  solidification forming  /  microstructure evolution  /  performance regulation
姜浩, 苏海军, 余明辉, 王若彤, 申仲琳, 郭一诺, 张卓, 郭敏. 高温度梯度凝固成形超高温氧化物共晶陶瓷组织演变及力学性能研究进展. 硅酸盐学报, 2026 , 54 (2) : 414 -427 . DOI: 10.14062/j.issn.0454-5648.20250517
Hao JIANG, Haijun SU, Minghui YU, Ruotong WANG, Zhonglin SHEN, Yinuo GUO, Zhuo ZHANG, Min GUO. Research Progress on Microstructure Evolution and Mechanical Properties of Ultra-High Temperature Oxide Eutectic Ceramics Solidified by High Temperature Gradient Solidification[J]. Journal of the Chinese Ceramic Society, 2026 , 54 (2) : 414 -427 . DOI: 10.14062/j.issn.0454-5648.20250517
  • 国家自然科学基金(52130204; 52174376)
  • 国家重点研发计划项目(2024YFB3714502)
  • 陕西省重点研发计划项目(2024CY-GJHX-29; 2024GX-ZDCYL-03-03)
  • 宁波市科技计划项目(2025Z070)
  • 西北工业大学凝固技术全国重点实验室开放课题(2025-TZ-01)
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2026年第54卷第2期
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doi: 10.14062/j.issn.0454-5648.20250517
  • 接收时间:2025-06-30
  • 首发时间:2026-10-27
  • 出版时间:2026-02-20
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  • 收稿日期:2025-06-30
  • 修回日期:2025-07-13
基金
国家自然科学基金(52130204; 52174376)
国家重点研发计划项目(2024YFB3714502)
陕西省重点研发计划项目(2024CY-GJHX-29; 2024GX-ZDCYL-03-03)
宁波市科技计划项目(2025Z070)
西北工业大学凝固技术全国重点实验室开放课题(2025-TZ-01)
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    西北工业大学,凝固技术全国重点实验室,西安 710072

通讯作者:

苏海军(1981—),男,博士,教授。
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2种不同金属材料的力学参数
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属
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种数
Number of
species
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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