{"id":{"repo_id":"texas","oai_identifier":"oai:repositories.lib.utexas.edu:2152/74896"},"canonical_url":"https://search.dev.ndltd.org/etd/texas/oai:repositories.lib.utexas.edu:2152/74896","repository":{"repo_id":"texas","name":"University of Texas","base_url":"https://repositories.lib.utexas.edu/server/oai/request"},"display":{"title":"Silicon infiltration of silicon carbide selective laser sintered preforms","abstract":"High-temperature infiltration is an important process that is used to add strength to skeletal microstructures. In this study, silicon carbide preforms are created using selective laser sintering. These parts are then infiltrated with an epoxy to decrease slumping of the part. They are then infiltrated using high temperature pressureless infiltration of a silicon matrix. This materials system can be applied in a wide variety of industries, including military, aircraft, tooling and automotive. The silicon matrix adds strength to silicon carbide, is robust at high temperatures, and has a comparable coefficient of thermal expansion. Shrinkage measurements, optical microscopy, density measurements, four point bend testing, hardness testing, and scanning electron microscopy were all performed to characterize the parts. The silicon carbide/silicon parts had little shrinkage, were fully infiltrated, have good flexural strength. Flexural strength for non-epoxy silicon infiltrated parts was 147 MPa, and for epoxy silicon infiltrated parts, 163 MPa. Vickers hardness values for non-epoxy silicon infiltrated parts was 1400, and for epoxy silicon infiltrated parts, 1420. Scanning electron microscopy revealed that some undesirable reactions took place, but reaction bonded silicon carbide was formed.","abstract_html":"High-temperature infiltration is an important process that is used to add strength to skeletal microstructures. In this study, silicon carbide preforms are created using selective laser sintering. These parts are then infiltrated with an epoxy to decrease slumping of the part. They are then infiltrated using high temperature pressureless infiltration of a silicon matrix. This materials system can be applied in a wide variety of industries, including military, aircraft, tooling and automotive. The silicon matrix adds strength to silicon carbide, is robust at high temperatures, and has a comparable coefficient of thermal expansion. Shrinkage measurements, optical microscopy, density measurements, four point bend testing, hardness testing, and scanning electron microscopy were all performed to characterize the parts. The silicon carbide/silicon parts had little shrinkage, were fully infiltrated, have good flexural strength. Flexural strength for non-epoxy silicon infiltrated parts was 147 MPa, and for epoxy silicon infiltrated parts, 163 MPa. Vickers hardness values for non-epoxy silicon infiltrated parts was 1400, and for epoxy silicon infiltrated parts, 1420. Scanning electron microscopy revealed that some undesirable reactions took place, but reaction bonded silicon carbide was formed.","abstract_has_math":false,"creators":["Barrow, Stacia Lynn"],"institution":"University of Texas at Austin","degree_name":"Master of Science in Engineering","degree_level":"Masters","degree_discipline":"Materials Science and Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Bourell, David Lee"],"committee_chairs":[],"committee_members":[],"year":2004,"date_issued":"2004-12-18","date_published":"2004-12-18","updated_at":"2026-07-24T05:01:08Z","subjects":["Selective laser sintering","Silicon carbide preform","Preform fabrication"],"languages":["eng"],"rights":["Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://dx.doi.org/10.26153/tsw/2008"],"render_values":[{"text":"http://dx.doi.org/10.26153/tsw/2008","href":"http://dx.doi.org/10.26153/tsw/2008","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/2152/74896","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Bourell, David Lee"]},{"key":"dc:creator","label":"Author","values":["Barrow, Stacia Lynn"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-06-06T19:51:30Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2019-06-06T19:51:30Z"]},{"key":"dc:date.issued","label":"Date","values":["2004-12-18"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Materials Science and Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Texas at Austin"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Selective laser sintering","Silicon carbide preform","Preform fabrication"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/2152/74896","http://dx.doi.org/10.26153/tsw/2008"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["High-temperature infiltration is an important process that is used to add strength to skeletal microstructures. In this study, silicon carbide preforms are created using selective laser sintering. These parts are then infiltrated with an epoxy to decrease slumping of the part. They are then infiltrated using high temperature pressureless infiltration of a silicon matrix. This materials system can be applied in a wide variety of industries, including military, aircraft, tooling and automotive. The silicon matrix adds strength to silicon carbide, is robust at high temperatures, and has a comparable coefficient of thermal expansion. Shrinkage measurements, optical microscopy, density measurements, four point bend testing, hardness testing, and scanning electron microscopy were all performed to characterize the parts. The silicon carbide/silicon parts had little shrinkage, were fully infiltrated, have good flexural strength. Flexural strength for non-epoxy silicon infiltrated parts was 147 MPa, and for epoxy silicon infiltrated parts, 163 MPa. Vickers hardness values for non-epoxy silicon infiltrated parts was 1400, and for epoxy silicon infiltrated parts, 1420. Scanning electron microscopy revealed that some undesirable reactions took place, but reaction bonded silicon carbide was formed."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["electronic"]},{"key":"dc:title","label":"Title","values":["Silicon infiltration of silicon carbide selective laser sintered preforms"]}]}],"canonical_facts":{"dc:contributor.advisor":["Bourell, David Lee"],"dc:creator":["Barrow, Stacia Lynn"],"dc:date.accessioned":["2019-06-06T19:51:30Z"],"dc:date.available":["2019-06-06T19:51:30Z"],"dc:date.issued":["2004-12-18"],"dc:description.abstract":["High-temperature infiltration is an important process that is used to add strength to skeletal microstructures. In this study, silicon carbide preforms are created using selective laser sintering. These parts are then infiltrated with an epoxy to decrease slumping of the part. They are then infiltrated using high temperature pressureless infiltration of a silicon matrix. This materials system can be applied in a wide variety of industries, including military, aircraft, tooling and automotive. The silicon matrix adds strength to silicon carbide, is robust at high temperatures, and has a comparable coefficient of thermal expansion. Shrinkage measurements, optical microscopy, density measurements, four point bend testing, hardness testing, and scanning electron microscopy were all performed to characterize the parts. The silicon carbide/silicon parts had little shrinkage, were fully infiltrated, have good flexural strength. Flexural strength for non-epoxy silicon infiltrated parts was 147 MPa, and for epoxy silicon infiltrated parts, 163 MPa. Vickers hardness values for non-epoxy silicon infiltrated parts was 1400, and for epoxy silicon infiltrated parts, 1420. Scanning electron microscopy revealed that some undesirable reactions took place, but reaction bonded silicon carbide was formed."],"dc:format.medium":["electronic"],"dc:identifier.uri":["https://hdl.handle.net/2152/74896","http://dx.doi.org/10.26153/tsw/2008"],"dc:language.iso":["eng"],"dc:rights":["Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works."],"dc:subject":["Selective laser sintering","Silicon carbide preform","Preform fabrication"],"dc:title":["Silicon infiltration of silicon carbide selective laser sintered preforms"],"dc:type":["Thesis"],"thesis:degree_discipline":["Materials Science and Engineering"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science in Engineering"],"thesis:institution_name":["University of Texas at Austin"]},"updated_at":"2026-07-24T05:01:08Z"}