{"id":989,"date":"2026-07-31T20:04:32","date_gmt":"2026-08-01T01:04:32","guid":{"rendered":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/?p=989"},"modified":"2026-07-31T20:04:35","modified_gmt":"2026-08-01T01:04:35","slug":"larry-k-aagesen-stephanie-a-pitts-brennan-k-harris-tiankai-yao-lucas-d-robinson-r-edwin-garcia-electrochemical-grand-potential-based-phase-field-simulation-of-electric-field-assisted-sintering","status":"publish","type":"post","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2026\/07\/31\/larry-k-aagesen-stephanie-a-pitts-brennan-k-harris-tiankai-yao-lucas-d-robinson-r-edwin-garcia-electrochemical-grand-potential-based-phase-field-simulation-of-electric-field-assisted-sintering\/","title":{"rendered":"Larry K Aagesen, Stephanie A Pitts, Brennan K Harris, Tiankai Yao, Lucas D Robinson, R Edwin Garc\u00eda “Electrochemical grand potential-based phase-field simulation of electric field-assisted sintering.” Acta Materialia. 275: 120049, 2024."},"content":{"rendered":"\n

Larry K Aagesen, Stephanie A Pitts, Brennan K Harris, Tiankai Yao, Lucas D Robinson, R Edwin Garc\u00eda “Electrochemical grand potential-based phase-field simulation of electric field-assisted sintering.<\/em>” Acta Materialia.<\/strong> 275: 120049, 2024. https:\/\/doi.org\/10.1016\/j.actamat.2024.120049<\/a><\/p>\n\n\n\n

Abstract<\/h2>\n\n\n\n

An electrochemical grand potential functional was proposed to describe the sintering of an ionic ceramic green body. The resultant phase-field description enables simulation of the consolidation of an arbitrary number of granular particles and their interactions with the surrounding void phase. The model includes the effects of charged vacancies and the associated interactions between internal and\u00a0applied electric fields<\/a>. Defect segregation to grain boundaries is also accounted for, as well as enhanced\u00a0interfacial defect<\/a>\u00a0mobilities. The model was parameterized for Y2<\/sub>O3<\/sub>. Simulations of two-particle systems showed that the applied electric field had an increasingly important impact on neck growth as particle size increased. A sudden rapid increase in temperature occurred for larger field\u00a0strengths<\/a>, which has been reported to be correlated to the onset of a flash event in flash sintering. Simulations of many particles showed that\u00a0internal heat generation<\/a>\u00a0by\u00a0Joule heating<\/a>\u00a0was localized at particle\u2013particle contacts (grain boundaries), even though their conductivities were lower than nearby internal particle-void interfaces. A percolative path for ionic charge across the green body and the ceramic sintered solid was thus defined, accelerating the Joule heating process as the porosity of the green body is removed.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Larry K Aagesen, Stephanie A Pitts, Brennan K Harris, Tiankai Yao, Lucas…<\/p>\n

Continue reading “Larry K Aagesen, Stephanie A Pitts, Brennan K Harris, Tiankai Yao, Lucas D Robinson, R Edwin Garc\u00eda “Electrochemical grand potential-based phase-field simulation of electric field-assisted sintering.” Acta Materialia. 275: 120049, 2024.”<\/span>…<\/a><\/div>\n
Continue reading \"Larry K Aagesen, Stephanie A Pitts, Brennan K Harris, Tiankai Yao, Lucas D Robinson, R Edwin Garc\u00eda “Electrochemical grand potential-based phase-field simulation of electric field-assisted sintering.” Acta Materialia. 275: 120049, 2024.\"<\/span>…<\/a><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[45],"tags":[6,75,14,48],"class_list":["post-989","post","type-post","status-publish","format-standard","hentry","category-papers","tag-electrochemistry","tag-flash-sintering","tag-microstructures","tag-phase-field","entry"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peeeSR-fX","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":998,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2026\/08\/01\/s-zhou-c-shen-h-li-y-zhang-d-estrella-a-sanjuan-d-hermawan-b-tsai-j-huang-x-sheng-a-choudhury-y-chen-r-e-garcia-x-zhang-haiyan-wang-phase-boundary-assisted-flash-sinteri\/","url_meta":{"origin":989,"position":0},"title":"S. Zhou, C. Shen, H. Li, Y. Zhang, D. Estrella, A. Sanjuan, D. Hermawan, B. Tsai, J. Huang, X. Sheng, A. Choudhury, Y. Chen, R. E. Garc\u00eda, X. Zhang, Haiyan Wang “Phase-Boundary Assisted Flash Sintering of Al2O3-TiO2 Nanocomposites.” Acta Materialia. 302:121612, 2026.","author":"redwing","date":"08\/01\/2026","format":false,"excerpt":"S. Zhou, C. Shen, H. Li, Y. Zhang, D. Estrella, A. Sanjuan, D. Hermawan, B. Tsai, J. Huang, X. Sheng, A. Choudhury, Y. Chen, R. E. Garc\u00eda, X. Zhang, Haiyan Wang \"Phase-Boundary Assisted Flash Sintering of Al2O3-TiO2 Nanocomposites.\" Acta Materialia. 302:121612, 2026. https:\/\/doi.org\/10.1016\/j.actamat.2025.121612 Abstract Al2O3\u00a0is inherently challenging to flash sinter\u2026","rel":"","context":"In "Papers"","block_context":{"text":"Papers","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/category\/papers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1009,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2026\/08\/01\/d-hermawan-a-sanjuan-s-doran-jf-rufner-sa-pitts-lk-aagesen-re-garcia-scaling-microstructural-processes-in-the-sintering-of-ionic-ceramics-acta-materialia-121688-2025\/","url_meta":{"origin":989,"position":1},"title":"D Hermawan, A Sanjuan, S Doran, JF Rufner, SA Pitts, LK Aagesen, RE Garc\u00eda “Scaling microstructural processes in the sintering of ionic ceramics.” Acta Materialia, 121688, 2025.","author":"redwing","date":"08\/01\/2026","format":false,"excerpt":"D Hermawan, A Sanjuan, S Doran, JF Rufner, SA Pitts, LK Aagesen, RE Garc\u00eda \"Scaling microstructural processes in the sintering of ionic ceramics.\" Acta Materialia, 121688, 2025. https:\/\/doi.org\/10.1016\/j.actamat.2025.121688 Abstract A multi-scale framework, combining a multiphase field formulation and large deformation mechanics, was developed as a stepping stone to perform the\u2026","rel":"","context":"In "Papers"","block_context":{"text":"Papers","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/category\/papers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":854,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2020\/10\/01\/rl-grosso-ksn-vikrant-l-feng-ens-muccillo-dnf-muche-gs-jawaharram-cm-barr-am-monterrosa-rhr-castro-re-garcia-k-hattar-sj-dillon-ultrahigh-temperature-in-situ-transmission-electron-microsco\/","url_meta":{"origin":989,"position":2},"title":"RL Grosso, KSN Vikrant, RE Garc\u00eda, K Hattar, SJ Dillon, et al. “Ultrahigh Temperature in situ Transmission Electron Microscopy based Bicrystal Coble Creep in Zirconia II: Interfacial Thermodynamics and Transport Mechanisms.” Acta Materialia, 200:1008-1021, 2020.","author":"redwing","date":"10\/01\/2020","format":false,"excerpt":"RL Grosso KSN Vikrant, L Feng, ENS Muccillo, DNF Muche, GS Jawaharram, CM Barr, AM Monterrosa, RHR Castro, RE Garc\u00eda, K Hattar, SJ Dillon \"Ultrahigh Temperature in situ Transmission Electron Microscopy based Bicrystal Coble Creep in Zirconia II: Interfacial Thermodynamics and Transport Mechanisms.\"\u00a0Acta Materialia, 200:1008-1021, 2020.\u00a0https:\/\/doi.org\/10.1016\/j.actamat.2020.08.070 Abstract This work uses\u2026","rel":"","context":"In "Papers"","block_context":{"text":"Papers","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/category\/papers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":806,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2019\/02\/20\/k-s-n-vikrant1-and-r-edwin-garcia-charged-grain-boundary-transitions-in-ionic-ceramics-for-energy-applications-npj-computational-materials-2019524-https-doi-org-10-1038-s41524-019-0159\/","url_meta":{"origin":989,"position":3},"title":"K. S. N. Vikrant and R. Edwin Garc\u00eda “Charged grain boundary transitions in ionic ceramics for energy applications.” npj Computational Materials (2019)5:24","author":"redwing","date":"02\/20\/2019","format":false,"excerpt":"K. S. N. Vikrant and R. Edwin Garc\u00eda \"Charged grain boundary transitions in ionic ceramics for energy applications.\" npj Computational Materials (2019)5:24; https:\/\/doi.org\/10.1038\/s41524-019-0159-2. abstract Surfaces and interfaces in ionic ceramics play a pivotal role in defining the transport limitations in many of the existing and emerging applications in energy-related systems\u2026","rel":"","context":"In "Papers"","block_context":{"text":"Papers","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/category\/papers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":921,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2022\/06\/08\/l-d-robinson-k-s-n-vikrant-j-e-blendell-c-a-handwerker-r-e-garcia-interfacial-and-volumetric-melting-regimes-of-sn-nanoparticles-acta-materialia-in-press-2022\/","url_meta":{"origin":989,"position":4},"title":"L.D. Robinson, K.S.N. Vikrant, J.E. Blendell, C.A. Handwerker, R.E. Garc\u00eda “Interfacial and Volumetric Melting Regimes of Sn Nanoparticles.” Acta Materialia. In Press. 2022","author":"redwing","date":"06\/08\/2022","format":false,"excerpt":"L.D. Robinson, K.S.N. Vikrant, J.E. Blendell, C.A. Handwerker, and R.E. Garc\u00eda \"Interfacial and Volumetric Melting Regimes of Sn Nanoparticles.\" Acta Materialia. In Press. 2022.\u00a0https:\/\/doi.org\/10.1016\/j.actamat.2022.118084 Abstract A thermodynamically consistent phase field formulation was developed to describe what has been historically known as the premelted surface layer in Sn nanoparticles. Two interfacial\u2026","rel":"","context":"In "Papers"","block_context":{"text":"Papers","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/category\/papers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2022\/06\/1-s2.0-S1359645422004657-ga1_lrg-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2022\/06\/1-s2.0-S1359645422004657-ga1_lrg-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2022\/06\/1-s2.0-S1359645422004657-ga1_lrg-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2022\/06\/1-s2.0-S1359645422004657-ga1_lrg-1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/engineering.purdue.edu\/ComputationalMaterials\/wp-content\/uploads\/2022\/06\/1-s2.0-S1359645422004657-ga1_lrg-1.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":1013,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2026\/08\/01\/ksn-vikrant-re-garcia-electrically-charged-dislocations-in-ionic-ceramics-acta-materialia-121778-2025\/","url_meta":{"origin":989,"position":5},"title":"KSN Vikrant, RE Garc\u00eda “Electrically charged dislocations in ionic ceramics.” Acta Materialia, 121778, 2025.","author":"redwing","date":"08\/01\/2026","format":false,"excerpt":"KSN Vikrant, RE Garc\u00eda \"Electrically charged dislocations in ionic ceramics.\" Acta Materialia, 121778, 2025. https:\/\/doi.org\/10.1016\/j.actamat.2025.121778 Abstract A thermodynamically consistent phase field theory describing coupled electrical, chemical, and mechanical effects on charged dislocations in ionic ceramics is presented. The formulation results in a generalized multiphysical Peach\u2013K\u00f6hler force, establishing a critical electro-chemo-mechanical\u2026","rel":"","context":"In "Papers"","block_context":{"text":"Papers","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/category\/papers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/comments?post=989"}],"version-history":[{"count":1,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/989\/revisions"}],"predecessor-version":[{"id":990,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/989\/revisions\/990"}],"wp:attachment":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media?parent=989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/categories?post=989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/tags?post=989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}