{"id":873,"date":"2020-10-31T07:00:01","date_gmt":"2020-10-31T12:00:01","guid":{"rendered":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/?p=873"},"modified":"2020-10-30T07:23:35","modified_gmt":"2020-10-30T12:23:35","slug":"ksn-vikrant-w-rheinheimer-re-garcia-electrochemical-drag-effect-on-grain-boundary-motion-in-ionic-ceramics-npj-computational-materials-6165-2020","status":"publish","type":"post","link":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2020\/10\/31\/ksn-vikrant-w-rheinheimer-re-garcia-electrochemical-drag-effect-on-grain-boundary-motion-in-ionic-ceramics-npj-computational-materials-6165-2020\/","title":{"rendered":"KSN Vikrant, W Rheinheimer, RE Garc\u00eda “Electrochemical drag effect on grain boundary motion in ionic ceramics.” npj Computational Materials. 6:165, (2020)."},"content":{"rendered":"

KSN Vikrant, W Rheinheimer, RE Garc\u00eda “Electrochemical drag effect on grain boundary motion in ionic ceramics<\/em>.” npj Computational Materials.<\/strong> 6:<\/b>165, (2020). \u00a0https:\/\/doi.org\/10.1038\/s41524-020-00418-z<\/a><\/p>\n

Abstract<\/h3>\n
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The effects of drag imposed by extrinsic ionic species and point defects on the grain boundary motion of ionic polycrystalline ceramics were quantified for the generality of electrical, chemical, or structural driving forces. In the absence of, or for small driving forces, the extended electrochemical grain boundary remains pinned and symmetrically distributed about the structural interface. As the grain boundary begins to move, charged defects accumulate unsymmetrically about the structural grain boundary core. Above the critical driving force for motion, grain boundaries progressively shed individual ionic species, from heavier to lighter, until they display no interfacial electrostatic charge and zero Schottky potential. Ionic p\u2013n junction moving grain boundaries that induce a finite electrostatic potential difference across entire grains are identified for high velocity grains. The developed theory is demonstrated for Fe-doped SrTiO3<\/sub>. The increase in average Fe concentration and grain boundary crystallographic misorientation enhances grain boundary core segregation and results in thick space charge layers, which leads to a stronger drag force that reduces the velocity of the interface. The developed theory sets the stage to assess the effects of externally applied fields such as temperature, electromagnetic fields, and chemical stimuli to control the grain growth for developing textured, oriented microstructures desirable for a wide range of applications.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

KSN Vikrant, W Rheinheimer, RE Garc\u00eda “Electrochemical drag effect on grain boundary…<\/p>\n

Continue reading “KSN Vikrant, W Rheinheimer, RE Garc\u00eda “Electrochemical drag effect on grain boundary motion in ionic ceramics.” npj Computational Materials. 6:165, (2020).”<\/span>…<\/a><\/div>\n
Continue reading \"KSN Vikrant, W Rheinheimer, RE Garc\u00eda “Electrochemical drag effect on grain boundary motion in ionic ceramics.” npj Computational Materials. 6:165, (2020).\"<\/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_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[45],"tags":[76,75,10,48,7],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peeeSR-e5","jetpack_likes_enabled":true,"jetpack-related-posts":[{"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":873,"position":0},"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","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"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":851,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2020\/09\/27\/ksn-vikrant-w-rheinheimer-h-sternlicht-m-baurer-re-garcia-electrochemically-driven-abnormal-grain-growth-in-ionic-ceramics-acta-materialia-200-720-734-2020\/","url_meta":{"origin":873,"position":1},"title":"KSN Vikrant, W Rheinheimer, H Sternlicht, M B\u00e4urer, RE Garc\u00eda “Electrochemically-driven abnormal grain growth in ionic ceramics.” Acta Materialia 200: 720-734, 2020.","date":"09\/27\/2020","format":false,"excerpt":"KSN Vikrant, W Rheinheimer, H Sternlicht, M B\u00e4urer, RE Garc\u00eda \"Electrochemically-driven abnormal grain growth in ionic ceramics.\" Acta Materialia 200: 720-734, 2020. \u00a0https:\/\/doi.org\/10.1016\/j.actamat.2020.08.027 \u00a0 Abstract A combined theoretical and experimental analysis was performed to understand the effects of extrinsic ionic species and point defects on the microstructural evolution of ionic\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":775,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2018\/10\/09\/h-wang-xl-phuah-j-li-tb-holland-ksn-vikrant-l-qiang-cs-hellberg-n-bernstein-re-garcia-a-mukherjee-x-zhang-h-wang-key-microstructural-characteristics-in-flash-sintered-3ysz-critical-for-e\/","url_meta":{"origin":873,"position":2},"title":"H Wang, XL Phuah, J Li, TB Holland, KSN Vikrant, L Qiang, CS Hellberg, N Bernstein, RE Garc\u00eda, A Mukherjee, X Zhang, H Wang. “Key microstructural characteristics in flash sintered 3YSZ critical for enhanced sintering process.” Ceramics International. 45:1251-1257, 2019.","date":"10\/09\/2018","format":false,"excerpt":"H Wang, XL Phuah, J Li, TB Holland, KSN Vikrant, L Qiang, CS Hellberg, N Bernstein, RE Garc\u00eda, A Mukherjee, X Zhang, H Wang. \"Key microstructural characteristics in flash sintered 3YSZ critical for enhanced sintering process.\" Ceramics International. 45:1251-1257, 2019. https:\/\/doi.org\/10.1016\/j.ceramint.2018.10.007 Abstract To explore the fundamental flash sintering mechanisms in\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":761,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2018\/10\/26\/charged-interfaces-electrochemical-and-mechanical-effects\/","url_meta":{"origin":873,"position":3},"title":"V. Karra, W. Chueh, R.E. Garc\u00eda. \u201cCharged Interfaces: Electrochemical and Mechanical Effects.\u201d Energy & Environmental Science. 11:1993-2000, 2018.","date":"10\/26\/2018","format":false,"excerpt":"V. Karra, W. Chueh, R.E. Garc\u00eda. \u201cCharged Interfaces: Electrochemical and Mechanical Effects.\u201d\u00a0Energy & Environmental Science. \u00a0DOI: 10.1039\/C7EE03400H. 11:1993-2000, 2018. Abstract We establish a comprehensive space-charge treatment that includes electrochemomechanical effects to physically describe the equilibrium and transport properties of charged interfaces in ion-conducting solids. The theory is consistent with the\u2026","rel":"","context":"In "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":873,"position":4},"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.","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"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":849,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2020\/09\/27\/ksn-vikrant-rl-grosso-re-garcia-k-hattar-sj-dillon-et-al-ultrahigh-temperature-in-situ-transmission-electron-microscopy-based-bicrystal-coble-creep-in-zirconia-i-nanowire-growth-and-interfaci\/","url_meta":{"origin":873,"position":5},"title":"KSN Vikrant, RL Grosso, RE Garc\u00eda, K Hattar, SJ Dillon et al. “Ultrahigh Temperature in situ Transmission Electron Microscopy based Bicrystal Coble Creep in Zirconia I: Nanowire Growth and Interfacial Diffusivity.” Acta Materialia 199:530-541, 2020.","date":"09\/27\/2020","format":false,"excerpt":"KSN Vikrant, RL Grosso, L. Feng, ENS Muccillo, DNF Muche, GS Jawaharram, CM Barr, AM Monterrosa, RHR Castro, RE Garc\u00eda, K Hattar, SJ Dillon\u00a0 \"Ultrahigh Temperature in situ Transmission Electron Microscopy based Bicrystal Coble Creep in Zirconia I: Nanowire Growth and Interfacial Diffusivity.\" Acta Materialia 199:530-541, 2020.\u00a0https:\/\/doi.org\/10.1016\/j.actamat.2020.08.069 Abstract This work\u2026","rel":"","context":"In "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\/873"}],"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=873"}],"version-history":[{"count":1,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/873\/revisions"}],"predecessor-version":[{"id":874,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/873\/revisions\/874"}],"wp:attachment":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media?parent=873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/categories?post=873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/tags?post=873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}