{"id":{"repo_id":"must-thes","oai_identifier":"oai:scholarsmine.mst.edu:doctoral_dissertations-3044"},"canonical_url":"https://search.dev.ndltd.org/etd/must-thes/oai:scholarsmine.mst.edu:doctoral_dissertations-3044","repository":{"repo_id":"must-thes","name":"Missouri University of Science and Technology","base_url":"https://scholarsmine.mst.edu/do/oai/"},"display":{"title":"The oxidation kinetics of liquid lead and lead alloys","abstract":"\"Liquid lead and lead-silver alloys were investigated to determine the rates and products of oxidation in pure oxygen at temperatures of 350 to 600°C. The kinetic data were determined using a Cahn electro-balance. Liquid lead was found to follow a cubic rate of oxidation between 350 and 400°C. A parabolic rate was found at temperatures above 400°C. 0.496% silver and 2.258% silver alloys followed a cubic rate of oxidation from 350 to 550°C and tended to approach a parabolic rate of oxidation above this temperature. Silver additions were found to increase the rate of oxidation as compared to the pure lead rates. No significant pressure effects were found over a range of 730 mm to 1 mm Hg of oxygen. Both PbO (orthorhombic) and PbO (tetragonal) were found to be the reaction products at temperatures of 350 and 450°C. At 550°C only PbO (orthorhombic) was found. In all cases, the oxide was preferentially oriented, with the (002) basal plane parallel to the melt surface\"--Abstract, page ii.","abstract_html":""Liquid lead and lead-silver alloys were investigated to determine the rates and products of oxidation in pure oxygen at temperatures of 350 to 600°C. The kinetic data were determined using a Cahn electro-balance. Liquid lead was found to follow a cubic rate of oxidation between 350 and 400°C. A parabolic rate was found at temperatures above 400°C. 0.496% silver and 2.258% silver alloys followed a cubic rate of oxidation from 350 to 550°C and tended to approach a parabolic rate of oxidation above this temperature. Silver additions were found to increase the rate of oxidation as compared to the pure lead rates. No significant pressure effects were found over a range of 730 mm to 1 mm Hg of oxygen. Both PbO (orthorhombic) and PbO (tetragonal) were found to be the reaction products at temperatures of 350 and 450°C. At 550°C only PbO (orthorhombic) was found. In all cases, the oxide was preferentially oriented, with the (002) basal plane parallel to the melt surface"--Abstract, page ii.","abstract_has_math":false,"creators":["Weyand, Thomas Edward"],"institution":"University of Missouri--Rolla","degree_name":"Ph. D. in Metallurgical Engineering","degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-02-10T08:00:00Z","date_published":"2016-02-10T08:00:00Z","updated_at":"2026-07-24T03:18:57Z","subjects":["Metallurgy"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarsmine.mst.edu/doctoral_dissertations/2042","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Weyand, Thomas Edward"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2016-02-10T08:00:00Z"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation - Open Access"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph. D. in Metallurgical Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Missouri--Rolla"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Metallurgy"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarsmine.mst.edu/doctoral_dissertations/2042"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["\"Liquid lead and lead-silver alloys were investigated to determine the rates and products of oxidation in pure oxygen at temperatures of 350 to 600°C. The kinetic data were determined using a Cahn electro-balance. Liquid lead was found to follow a cubic rate of oxidation between 350 and 400°C. A parabolic rate was found at temperatures above 400°C. 0.496% silver and 2.258% silver alloys followed a cubic rate of oxidation from 350 to 550°C and tended to approach a parabolic rate of oxidation above this temperature. Silver additions were found to increase the rate of oxidation as compared to the pure lead rates. No significant pressure effects were found over a range of 730 mm to 1 mm Hg of oxygen. Both PbO (orthorhombic) and PbO (tetragonal) were found to be the reaction products at temperatures of 350 and 450°C. At 550°C only PbO (orthorhombic) was found. In all cases, the oxide was preferentially oriented, with the (002) basal plane parallel to the melt surface\"--Abstract, page ii."]},{"key":"dc:title","label":"Title","values":["The oxidation kinetics of liquid lead and lead alloys"]}]}],"canonical_facts":{"dc:creator":["Weyand, Thomas Edward"],"dc:date.available":["2016-02-10T08:00:00Z"],"dc:description.abstract":["\"Liquid lead and lead-silver alloys were investigated to determine the rates and products of oxidation in pure oxygen at temperatures of 350 to 600°C. The kinetic data were determined using a Cahn electro-balance. Liquid lead was found to follow a cubic rate of oxidation between 350 and 400°C. A parabolic rate was found at temperatures above 400°C. 0.496% silver and 2.258% silver alloys followed a cubic rate of oxidation from 350 to 550°C and tended to approach a parabolic rate of oxidation above this temperature. Silver additions were found to increase the rate of oxidation as compared to the pure lead rates. No significant pressure effects were found over a range of 730 mm to 1 mm Hg of oxygen. Both PbO (orthorhombic) and PbO (tetragonal) were found to be the reaction products at temperatures of 350 and 450°C. At 550°C only PbO (orthorhombic) was found. In all cases, the oxide was preferentially oriented, with the (002) basal plane parallel to the melt surface\"--Abstract, page ii."],"dc:identifier":["https://scholarsmine.mst.edu/doctoral_dissertations/2042"],"dc:subject":["Metallurgy"],"dc:title":["The oxidation kinetics of liquid lead and lead alloys"],"dc:type":["Dissertation - Open Access"],"thesis:degree_name":["Ph. D. in Metallurgical Engineering"],"thesis:institution_name":["University of Missouri--Rolla"]},"updated_at":"2026-07-24T03:18:57Z"}