{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/125558"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/125558","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"In-situ study of thermo-kinetics in sintering","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms","abstract_has_math":false,"creators":["Coffman, Devon Keith"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Materials Science & Engr","degree_department":null,"school":null,"contributors":["Dillon, Shen","Bellon, Pascal","Krogstad, Jessica","Perry, Nicola"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-07-10","date_published":"2024-07-10","updated_at":"2026-07-22T22:25:02Z","subjects":["Sintering","Microscopy","Laser Heating","High Temperature","Thermodynamics","Kinetics","Thermokinetics","Densification","Coarsening","Tem","In-situ","Cantilever","Dislocation","Nucleation","Rate-limiting"],"languages":["en","eng"],"rights":["Copyright 2024 Devon Keith Coffman"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/125558","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dillon, Shen","Bellon, Pascal","Krogstad, Jessica","Perry, Nicola"]},{"key":"dc:creator","label":"Author","values":["Coffman, Devon Keith"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-07-10","2024-08"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Materials Science & Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Sintering","Microscopy","Laser Heating","High Temperature","Thermodynamics","Kinetics","Thermokinetics","Densification","Coarsening","Tem","In-situ","Cantilever","Dislocation","Nucleation","Rate-limiting"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Devon Keith Coffman"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/125558"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms","The student, Devon Coffman, accepted the attached license on 2024-07-02 at 15:27.","The student, Devon Coffman, submitted this Dissertation for approval on 2024-07-02 at 16:56.","This Dissertation was approved for publication on 2024-07-10 at 15:36.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20920 on 2025-02-04 at 21:04:04","The evolution of materials at high temperature is governed by a combination of driving forces and transport mediating mechanisms which have direct relation to the microstructure of the material. The thermokinetic parameters underlying this evolution are relevant to processing, properties, and performance for any materials which see high temperature during their life cycle. The field of sintering has so far been built successfully on the basis of diffusion-rate-limited kinetic models, but there remain unanswered questions in the literature regarding observations such as rapid heating effects, electric field effects, shear stress effects, and the evolution of residual stresses in sintered compacts, among others. This work introduces a series of in-situ, laser-heated microscopy techniques which aim to measure the underlying thermokinetic parameters of sintering, including surface energy, surface diffusivity, and grain boundary diffusivity. During this work, the close in-situ observation provided insight into the mechanistic details of high temperature transport, including evidence for nucleation-rate-limited grain boundary transport kinetics--a mechanism which has thus far received relatively little consideration in sintering science. We test this mechanism and offer arguments for its relevance to many of the unanswered questions in sintering. We conclude with a basic sintering model which demonstrates the explanatory power of this mechanism."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["In-situ study of thermo-kinetics in sintering"]}]}],"canonical_facts":{"dc:contributor":["Dillon, Shen","Bellon, Pascal","Krogstad, Jessica","Perry, Nicola"],"dc:creator":["Coffman, Devon Keith"],"dc:date":["2024-07-10","2024-08"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms","The student, Devon Coffman, accepted the attached license on 2024-07-02 at 15:27.","The student, Devon Coffman, submitted this Dissertation for approval on 2024-07-02 at 16:56.","This Dissertation was approved for publication on 2024-07-10 at 15:36.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20920 on 2025-02-04 at 21:04:04","The evolution of materials at high temperature is governed by a combination of driving forces and transport mediating mechanisms which have direct relation to the microstructure of the material. The thermokinetic parameters underlying this evolution are relevant to processing, properties, and performance for any materials which see high temperature during their life cycle. The field of sintering has so far been built successfully on the basis of diffusion-rate-limited kinetic models, but there remain unanswered questions in the literature regarding observations such as rapid heating effects, electric field effects, shear stress effects, and the evolution of residual stresses in sintered compacts, among others. This work introduces a series of in-situ, laser-heated microscopy techniques which aim to measure the underlying thermokinetic parameters of sintering, including surface energy, surface diffusivity, and grain boundary diffusivity. During this work, the close in-situ observation provided insight into the mechanistic details of high temperature transport, including evidence for nucleation-rate-limited grain boundary transport kinetics--a mechanism which has thus far received relatively little consideration in sintering science. We test this mechanism and offer arguments for its relevance to many of the unanswered questions in sintering. We conclude with a basic sintering model which demonstrates the explanatory power of this mechanism."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/125558"],"dc:language":["en","eng"],"dc:rights":["Copyright 2024 Devon Keith Coffman"],"dc:subject":["Sintering","Microscopy","Laser Heating","High Temperature","Thermodynamics","Kinetics","Thermokinetics","Densification","Coarsening","Tem","In-situ","Cantilever","Dislocation","Nucleation","Rate-limiting"],"dc:title":["In-situ study of thermo-kinetics in sintering"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Materials Science & Engr"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:02Z"}