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Phase-field simulation of flash-sintered ceramics: linking sample size and electric field to microstructural homogeneity.

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Title: Phase-field simulation of flash-sintered ceramics: linking sample size and electric field to microstructural homogeneity.
Authors: Jhala, Ramdevsinh1 (AUTHOR) ramdevsinh.jhala@marwadieducation.edu.in, Patil, Nagaraj2 (AUTHOR) nagaraj.patil@jainuniversity.ac.in, Shit, Debasish3 (AUTHOR) debasish_shit@outlook.com, Bupesh Raja, V. K.4 (AUTHOR) bupeshraja.auto@sathyabama.ac.in, Mahapatro, Abinash5 (AUTHOR) abinashmahapatro@soa.ac.in, Gupta, Deepak6,7 (AUTHOR) deepakgupta@gehu.ac.in
Source: Applied Physics A: Materials Science & Processing. Jul2025, Vol. 131 Issue 7, p1-15. 15p.
Subjects: Ceramic engineering, Electric fields, Alternating currents, Grain refinement, Crystal grain boundaries
Abstract: This work utilizes a phase-field modeling approach to investigate how electric field characteristics—specifically direct current (DC) and alternating current (AC)—along with sample dimensions, influence grain structure evolution during the final stage of flash sintering in ceramic materials. The simulations reveal that increasing the strength of a DC field initially enhances grain growth rates; however, this acceleration diminishes beyond a certain threshold, indicating a saturation behavior. In contrast, strong AC fields tend to inhibit grain coarsening, fostering the development of fine-grained regions but simultaneously increasing grain-size variability due to spatial differences in grain boundary mobility. The model also captures the emergence of anisotropic grain morphologies, particularly under low-intensity DC fields, where grains preferentially elongate in directions orthogonal to the applied field. Sample size further affects microstructural consistency: smaller domains promote more uniform grain structures, whereas larger volumes tend to develop directionally biased growth and greater heterogeneity, driven by uneven electric field distributions. Collectively, the findings highlight a set of processing parameters that optimize grain refinement, suppress excessive anisotropy, and maintain controlled heterogeneity in flash-sintered ceramics. [ABSTRACT FROM AUTHOR]
Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature 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.)
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  Data: Phase-field simulation of flash-sintered ceramics: linking sample size and electric field to microstructural homogeneity.
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  Data: <searchLink fieldCode="AR" term="%22Jhala%2C+Ramdevsinh%22">Jhala, Ramdevsinh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ramdevsinh.jhala@marwadieducation.edu.in</i><br /><searchLink fieldCode="AR" term="%22Patil%2C+Nagaraj%22">Patil, Nagaraj</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> nagaraj.patil@jainuniversity.ac.in</i><br /><searchLink fieldCode="AR" term="%22Shit%2C+Debasish%22">Shit, Debasish</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> debasish_shit@outlook.com</i><br /><searchLink fieldCode="AR" term="%22Bupesh+Raja%2C+V%2E+K%2E%22">Bupesh Raja, V. K.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> bupeshraja.auto@sathyabama.ac.in</i><br /><searchLink fieldCode="AR" term="%22Mahapatro%2C+Abinash%22">Mahapatro, Abinash</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> abinashmahapatro@soa.ac.in</i><br /><searchLink fieldCode="AR" term="%22Gupta%2C+Deepak%22">Gupta, Deepak</searchLink><relatesTo>6,7</relatesTo> (AUTHOR)<i> deepakgupta@gehu.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Physics+A%3A+Materials+Science+%26+Processing%22">Applied Physics A: Materials Science & Processing</searchLink>. Jul2025, Vol. 131 Issue 7, p1-15. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Ceramic+engineering%22">Ceramic engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+fields%22">Electric fields</searchLink><br /><searchLink fieldCode="DE" term="%22Alternating+currents%22">Alternating currents</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+refinement%22">Grain refinement</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+grain+boundaries%22">Crystal grain boundaries</searchLink>
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  Data: This work utilizes a phase-field modeling approach to investigate how electric field characteristics—specifically direct current (DC) and alternating current (AC)—along with sample dimensions, influence grain structure evolution during the final stage of flash sintering in ceramic materials. The simulations reveal that increasing the strength of a DC field initially enhances grain growth rates; however, this acceleration diminishes beyond a certain threshold, indicating a saturation behavior. In contrast, strong AC fields tend to inhibit grain coarsening, fostering the development of fine-grained regions but simultaneously increasing grain-size variability due to spatial differences in grain boundary mobility. The model also captures the emergence of anisotropic grain morphologies, particularly under low-intensity DC fields, where grains preferentially elongate in directions orthogonal to the applied field. Sample size further affects microstructural consistency: smaller domains promote more uniform grain structures, whereas larger volumes tend to develop directionally biased growth and greater heterogeneity, driven by uneven electric field distributions. Collectively, the findings highlight a set of processing parameters that optimize grain refinement, suppress excessive anisotropy, and maintain controlled heterogeneity in flash-sintered ceramics. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature 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: 10.1007/s00339-025-08715-4
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        Text: English
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      – SubjectFull: Alternating currents
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      – SubjectFull: Grain refinement
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      – SubjectFull: Crystal grain boundaries
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      – TitleFull: Phase-field simulation of flash-sintered ceramics: linking sample size and electric field to microstructural homogeneity.
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              Text: Jul2025
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              Y: 2025
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