https://scholars.lib.ntu.edu.tw/handle/123456789/407507
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lu Chung-Hsin | en_US |
dc.contributor.author | Lee Jiun-Ting | en_US |
dc.creator | Lee Jiun-Ting;Lu Chung-Hsin | - |
dc.date.accessioned | 2019-05-13T04:34:08Z | - |
dc.date.available | 2019-05-13T04:34:08Z | - |
dc.date.issued | 1995 | - |
dc.identifier.issn | 09145400 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/407507 | - |
dc.description.abstract | The influence of the calcination conditions of MgNb 2 O 6 on the perovskite formation and microstructure of Pb (Mg 1/3 Nb 2/3 )O 3 prepared by the columbite process was investigated. The purity of MgNb 2 O 6 was found to significantly affect the formation process of perovskite phase. Lower purity of MgNb 2 O 6 led to retard the formation of perovskite phase. Calcination at temperatures above 800¢XC resulted in the complete formation of MgNb 2 O 6 . Pure MgNb 2 O 6 efficiently reacted with PbO, and accelerated the formation of perovskite phase. On the condition of without adding excess MgO or PbO, heating 1000¢XC-calcined MgNb 2 O 6 with PbO at 800¢XC for 2h resulted in monophasic Pb (Mg 1/3 Nb 2/3 )O 3 having submicron size. On the other hand, when MgNb 2 O 6 was prepared by 1200¢XC-calcination, the unfavorable grain-growth of MgNb 2 O 6 caused the decrease in the reactivity between MgNb 2 O 6 and PbO. The over-calcination of MgNb 2 O 6 also led the grain size of Pb (Mg 1/3 Nb 2/3 )O 3 to greatly increase to be around 2.5 £gm. Consequently, the calcination conditions of MgNb 2 O 6 markedly affected the reaction kinetics and grain size of Pb (Mg 1/3 Nb 2/3 )O 3 . | - |
dc.language | en | - |
dc.relation.ispartof | Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan | en_US |
dc.title | Influence of columbite MgNb 2 O 6 on the perovskite formation and microstructure of Pb (Mg 1/3 Nb 2/3 )O 3 ceramics | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.2109/jcersj.103.1122 | - |
dc.identifier.scopus | 2-s2.0-0029409967 | - |
dc.identifier.url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029409967&doi=10.2109%2fjcersj.103.1122&partnerID=40&md5=4ef82c1ca316236419a000c4abb2368d | - |
dc.relation.pages | 1122-1128 | - |
dc.relation.journalvolume | 103 | - |
dc.relation.journalissue | 1203 | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0003-0522-7020 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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