The effect of energy deposition on the formation of nanoscale alumina particles in the electrothermal plasma synthesis of nanomaterials
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Kyoungjin | - |
dc.date.accessioned | 2023-12-11T13:30:29Z | - |
dc.date.available | 2023-12-11T13:30:29Z | - |
dc.date.issued | 2008-04 | - |
dc.identifier.issn | 1229-9162 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/23858 | - |
dc.description.abstract | The electrothermal gun is a relatively new technology that produces various types of plasma vapor using high current pulsed power. A dense metal vapor plasma at extremely high temperature and high velocity is discharged from the electrothermal gun, and introduced into the background gas in the reaction chamber. Then; the discharged metal plasma vapor reacts with background gas and produces nanoscale ceramic particles. Although this method can be applied to make a variety of nanosized ceramic materials by choosing different metals for the cathode/anode/bore ablation and different gases in the reaction chamber, in this investigation, nanoscale alumina particles have been produced by letting a highly ionized aluminum plasma vapor react with oxygen gas in the reaction chamber. The synthesized alumina powder has been-characterized by X-ray diffraction, BET, SEM, and TEM. XRD patterns confirmed that low. energy firing of 44 kJ energy deposition produced high purity gamma-phase alumina nanoparticles, which sizes ranging between 5,and 50 nm with an average particle diameter of 26 urn. By contrast, a high energy shot of 96 kJ produced alumina particles of 41 nm average particle diameter and a small amount of delta- and alpha-phase contents were found even though gamma-phase alumina was still dominant. In addition, high-speed video imaging revealed delayed turbulent mixing and reaction between aluminum plasma vapor and oxygen gas to several milliseconds after approximately 1 ms current pulse duration. | - |
dc.format.extent | 6 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | KOREAN ASSOC CRYSTAL GROWTH, INC | - |
dc.title | The effect of energy deposition on the formation of nanoscale alumina particles in the electrothermal plasma synthesis of nanomaterials | - |
dc.type | Article | - |
dc.publisher.location | 대한민국 | - |
dc.identifier.wosid | 000257080800023 | - |
dc.identifier.bibliographicCitation | JOURNAL OF CERAMIC PROCESSING RESEARCH, v.9, no.2, pp 198 - 203 | - |
dc.citation.title | JOURNAL OF CERAMIC PROCESSING RESEARCH | - |
dc.citation.volume | 9 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 198 | - |
dc.citation.endPage | 203 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Ceramics | - |
dc.subject.keywordPlus | ELECTROGUN | - |
dc.subject.keywordPlus | DISCHARGE | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordAuthor | electrothermal gun | - |
dc.subject.keywordAuthor | metal plasma vapor | - |
dc.subject.keywordAuthor | nanoscale alumina powder | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
350-27, Gumi-daero, Gumi-si, Gyeongsangbuk-do, Republic of Korea (39253)054-478-7170
COPYRIGHT 2020 Kumoh University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.