{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25743"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25743","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The production and annealing of point defects produced by quenching and by tensile deformation in pure gold and silver","abstract":"Gold specimens of six nines purity were strained at 4.Z K by tensile deformation and were quenched from 700 ± 40 oC. For gold deformed at 4.ZoK the most prominent annealing is observed in the region between ZOoC and 70°C. For this case the annealing at 40°C obeys second order kinetics and the effective energy of migration, which increases with increasing purity, is 0.90 ± .04 eV for specimen of highest purity. For fast quenched gold (dT/dt = 5 x 10^4 to 5 0 .00 1.1 x 10 C/sec) the stage III annea1ing occurs from 40 C to 100 C. The annealing obeys second order kinetics and the effective energy of migration increases from 0.80 eV to 0.90 eV as the residual resistivity at 4.Z o K decreases from 9.5 x 10 -100 cm to 4.Z x 10 -10 0 cm. For slow dT 3 4 0 . quenched gold (dt = 7 x 10 to Z x 10 C/sec) the annea1~ng follows first order kinetics and the activation energy of migration is 0.70 ± .04 eV. The stage III annealing in deformed and fast quenched gold is attributed to the migration of a single vacancy in the presence of a high density of sinks. The results are shown to be consistent with an annealing theory which assumes that the divacancy has a high binding energy and that the value of sink density is important in determining the rate limiting process for the annealing. Fr~m the annealing kinetics of fast quenched gold and by using high temperature diffusion and thermal equilibrium data, the binding energy of a divacancy is calculated to be 0.35 < B < 0.52 eV. Some tensile deformation experiments were done on 99.9999% pure silver. The annealing is found to be much more complicated as compared with gold and stage III activation energy is 0.70 ± .04 eV. The identity of defects taking part in stage III in silver is not clear at the present time.","abstract_html":"Gold specimens of six nines purity were strained at 4.Z K by tensile deformation and were quenched from 700 ± 40 oC. For gold deformed at 4.ZoK the most prominent annealing is observed in the region between ZOoC and 70°C. For this case the annealing at 40°C obeys second order kinetics and the effective energy of migration, which increases with increasing purity, is 0.90 ± .04 eV for specimen of highest purity. For fast quenched gold (dT/dt = 5 x 10^4 to 5 0 .00 1.1 x 10 C/sec) the stage III annea1ing occurs from 40 C to 100 C. The annealing obeys second order kinetics and the effective energy of migration increases from 0.80 eV to 0.90 eV as the residual resistivity at 4.Z o K decreases from 9.5 x 10 -100 cm to 4.Z x 10 -10 0 cm. For slow dT 3 4 0 . quenched gold (dt = 7 x 10 to Z x 10 C/sec) the annea1~ng follows first order kinetics and the activation energy of migration is 0.70 ± .04 eV. The stage III annealing in deformed and fast quenched gold is attributed to the migration of a single vacancy in the presence of a high density of sinks. The results are shown to be consistent with an annealing theory which assumes that the divacancy has a high binding energy and that the value of sink density is important in determining the rate limiting process for the annealing. Fr~m the annealing kinetics of fast quenched gold and by using high temperature diffusion and thermal equilibrium data, the binding energy of a divacancy is calculated to be 0.35 &lt; B &lt; 0.52 eV. Some tensile deformation experiments were done on 99.9999% pure silver. The annealing is found to be much more complicated as compared with gold and stage III activation energy is 0.70 ± .04 eV. The identity of defects taking part in stage III in silver is not clear at the present time.","abstract_has_math":false,"creators":["Sharma, Ram Kishore"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Koehler, James S."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-07-11T14:02:58Z","date_published":"2011-07-11T14:02:58Z","updated_at":"2026-07-22T22:25:26Z","subjects":["point defect production","point defect annealing","quenching","tensile deformation","gold","silver"],"languages":["en"],"rights":["1968 Ram Kishore Sharma"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["6076351"],"render_values":[{"text":"6076351","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25743","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Koehler, James S."]},{"key":"dc:creator","label":"Author","values":["Sharma, Ram Kishore"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-07-11T14:02:58Z","10000-01-01","1968"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["point defect production","point defect annealing","quenching","tensile deformation","gold","silver"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1968 Ram Kishore Sharma"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["6076351","http://hdl.handle.net/2142/25743"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Gold specimens of six nines purity were strained at 4.Z K by tensile deformation and were quenched from 700 ± 40 oC. For gold deformed at 4.ZoK the most prominent annealing is observed in the region between ZOoC and 70°C. For this case the annealing at 40°C obeys second order kinetics and the effective energy of migration, which increases with increasing purity, is 0.90 ± .04 eV for specimen of highest purity. For fast quenched gold (dT/dt = 5 x 10^4 to 5 0 .00 1.1 x 10 C/sec) the stage III annea1ing occurs from 40 C to 100 C. The annealing obeys second order kinetics and the effective energy of migration increases from 0.80 eV to 0.90 eV as the residual resistivity at 4.Z o K decreases from 9.5 x 10 -100 cm to 4.Z x 10 -10 0 cm. For slow dT 3 4 0 . quenched gold (dt = 7 x 10 to Z x 10 C/sec) the annea1~ng follows first order kinetics and the activation energy of migration is 0.70 ± .04 eV. The stage III annealing in deformed and fast quenched gold is attributed to the migration of a single vacancy in the presence of a high density of sinks. The results are shown to be consistent with an annealing theory which assumes that the divacancy has a high binding energy and that the value of sink density is important in determining the rate limiting process for the annealing. Fr~m the annealing kinetics of fast quenched gold and by using high temperature diffusion and thermal equilibrium data, the binding energy of a divacancy is calculated to be 0.35 < B < 0.52 eV. Some tensile deformation experiments were done on 99.9999% pure silver. The annealing is found to be much more complicated as compared with gold and stage III activation energy is 0.70 ± .04 eV. The identity of defects taking part in stage III in silver is not clear at the present time.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:02:58Z No. of bitstreams: 1 1968_sharma.pdf: 3995580 bytes, checksum: 6ea91da3766ea516f3783bb8d08cc8b8 (MD5)","Made available in DSpace on 2011-07-11T14:02:58Z (GMT). No. of bitstreams: 1 1968_sharma.pdf: 3995580 bytes, checksum: 6ea91da3766ea516f3783bb8d08cc8b8 (MD5) Previous issue date: 1968","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:02:58Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:32:39-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["The production and annealing of point defects produced by quenching and by tensile deformation in pure gold and silver"]}]}],"canonical_facts":{"dc:contributor":["Koehler, James S."],"dc:creator":["Sharma, Ram Kishore"],"dc:date":["2011-07-11T14:02:58Z","10000-01-01","1968"],"dc:description":["Gold specimens of six nines purity were strained at 4.Z K by tensile deformation and were quenched from 700 ± 40 oC. For gold deformed at 4.ZoK the most prominent annealing is observed in the region between ZOoC and 70°C. For this case the annealing at 40°C obeys second order kinetics and the effective energy of migration, which increases with increasing purity, is 0.90 ± .04 eV for specimen of highest purity. For fast quenched gold (dT/dt = 5 x 10^4 to 5 0 .00 1.1 x 10 C/sec) the stage III annea1ing occurs from 40 C to 100 C. The annealing obeys second order kinetics and the effective energy of migration increases from 0.80 eV to 0.90 eV as the residual resistivity at 4.Z o K decreases from 9.5 x 10 -100 cm to 4.Z x 10 -10 0 cm. For slow dT 3 4 0 . quenched gold (dt = 7 x 10 to Z x 10 C/sec) the annea1~ng follows first order kinetics and the activation energy of migration is 0.70 ± .04 eV. The stage III annealing in deformed and fast quenched gold is attributed to the migration of a single vacancy in the presence of a high density of sinks. The results are shown to be consistent with an annealing theory which assumes that the divacancy has a high binding energy and that the value of sink density is important in determining the rate limiting process for the annealing. Fr~m the annealing kinetics of fast quenched gold and by using high temperature diffusion and thermal equilibrium data, the binding energy of a divacancy is calculated to be 0.35 < B < 0.52 eV. Some tensile deformation experiments were done on 99.9999% pure silver. The annealing is found to be much more complicated as compared with gold and stage III activation energy is 0.70 ± .04 eV. The identity of defects taking part in stage III in silver is not clear at the present time.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:02:58Z No. of bitstreams: 1 1968_sharma.pdf: 3995580 bytes, checksum: 6ea91da3766ea516f3783bb8d08cc8b8 (MD5)","Made available in DSpace on 2011-07-11T14:02:58Z (GMT). No. of bitstreams: 1 1968_sharma.pdf: 3995580 bytes, checksum: 6ea91da3766ea516f3783bb8d08cc8b8 (MD5) Previous issue date: 1968","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:02:58Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:32:39-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"],"dc:identifier":["6076351","http://hdl.handle.net/2142/25743"],"dc:language":["en"],"dc:rights":["1968 Ram Kishore Sharma"],"dc:subject":["point defect production","point defect annealing","quenching","tensile deformation","gold","silver"],"dc:title":["The production and annealing of point defects produced by quenching and by tensile deformation in pure gold and silver"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:26Z"}