{"id":854,"date":"2020-10-01T08:51:25","date_gmt":"2020-10-01T13:51:25","guid":{"rendered":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/?p=854"},"modified":"2020-10-17T12:56:23","modified_gmt":"2020-10-17T17:56:23","slug":"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","status":"publish","type":"post","link":"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\/","title":{"rendered":"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."},"content":{"rendered":"

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.<\/em>”\u00a0Acta Materialia<\/strong>, 200:1008-1021, 2020.\u00a0https:\/\/doi.org\/10.1016\/j.actamat.2020.08.070<\/a><\/p>\n

Abstract<\/h3>\n

This work uses a combination of stress dependent single grain boundary Coble creep and zero-creep experiments to measure interfacial energies, along with grain boundary point defect formation and migration volumes in cubic ZrO2<\/sub>. These data, along with interfacial diffusivities measured in a companion paper are then applied to analyzing two-particle sintering. The analysis presented indicates that the large activation volume,\u00a0<\/span><\/span> primarily derives from a large migration volume v*=vf<\/sub>\u00a0+ vm<\/sub>\u00a0and suggests that the grain boundary rate limiting defects are delocalized, possibly due to electrostatic interactions between charge compensating defects. The discrete nature of the sintering and creep process observed in the small-scale experiments supports the hypothesis that grain boundary dislocations serve as sources and sinks for grain boundary point defects and facilitate strain during sintering and Coble creep. Model two-particle sintering experiments demonstrate that initial-stage densification follows interface reaction rate-limited kinetics.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

RL Grosso KSN Vikrant, L Feng, ENS Muccillo, DNF Muche, GS Jawaharram,…<\/p>\n

Continue reading “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.”<\/span>…<\/a><\/div>\n
Continue reading \"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.\"<\/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":[76,59,6,55,10,14,58,48,77],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/peeeSR-dM","jetpack_likes_enabled":true,"jetpack-related-posts":[{"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":854,"position":0},"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":[]},{"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":854,"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":854,"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":877,"url":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/2020\/12\/10\/j-lund-k-s-n-vikrant-c-m-bishop-w-rheinheimer-r-e-garcia-thermodynamically-consistent-variational-principles-for-charged-interfaces-acta-materialia-205116525-2021\/","url_meta":{"origin":854,"position":3},"title":"J. Lund, K. S. N. Vikrant, C. M. Bishop, W. Rheinheimer, R. E. Garc\u00eda “Thermodynamically Consistent Variational Principles for Charged Interfaces.” Acta Materialia, 205:116525, (2021).","date":"12\/10\/2020","format":false,"excerpt":"J. Lund, K. S. N. Vikrant, C. M. Bishop, W. Rheinheimer, R. E. Garc\u00eda \"Thermodynamically Consistent Variational Principles for Charged Interfaces.\" Acta Materialia, 205:116525, (2021).\u00a0https:\/\/doi.org\/10.1016\/j.actamat.2020.116525 Abstract A generalized framework that naturally incorporates the free energy contributions of thermochemical, structural, mechanical, and electrical fields is presented to describe the Space Charge\u2026","rel":"","context":"In "Papers"","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":873,"url":"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\/","url_meta":{"origin":854,"position":4},"title":"KSN Vikrant, W Rheinheimer, RE Garc\u00eda “Electrochemical drag effect on grain boundary motion in ionic ceramics.” npj Computational Materials. 6:165, (2020).","date":"10\/31\/2020","format":false,"excerpt":"KSN Vikrant, W Rheinheimer, RE Garc\u00eda \"Electrochemical drag effect on grain boundary motion in ionic ceramics.\" npj Computational Materials. 6:165, (2020). \u00a0https:\/\/doi.org\/10.1038\/s41524-020-00418-z Abstract 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\u2026","rel":"","context":"In "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":854,"position":5},"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","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"","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},"classes":[]}],"_links":{"self":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/854"}],"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=854"}],"version-history":[{"count":5,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/854\/revisions"}],"predecessor-version":[{"id":870,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/posts\/854\/revisions\/870"}],"wp:attachment":[{"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/media?parent=854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/categories?post=854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.purdue.edu\/ComputationalMaterials\/index.php\/wp-json\/wp\/v2\/tags?post=854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}