DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cha, SI | ko |
dc.contributor.author | Kim, BK | ko |
dc.contributor.author | Hong, Soon-Hyung | ko |
dc.date.accessioned | 2008-02-14T08:05:54Z | - |
dc.date.available | 2008-02-14T08:05:54Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2001 | - |
dc.identifier.citation | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, v.19, no.6, pp.397 - 403 | - |
dc.identifier.issn | 0263-4368 | - |
dc.identifier.uri | http://hdl.handle.net/10203/3039 | - |
dc.description.abstract | Mechanical properties and microstructures of nanocrystalline WC-10Co cemented carbides were investigated. The nanocrystalline WC-10Co cemented carbide powders were manufactured by reduction and carbonization of the nanocrystalline precursor powders which were prepared by spray drying process of solution containing ammonia meta-tungstate (AMT) and cobalt nitrate. The WC powders were about 100 nm in diameter mixed homogeneously with Co binder phase and were sintered at 1375 degreesC under a pressure of 1 mTorr. In order to compare the inicrostructures and mechanical properties with those of nanocrystalline WC-10Co. commercial WC powders in a diameter range of 0.57-4 mum were mixed with Co powders, and were sintered at the same conditions as those of nanocrystalline powders. TaC, Cr3C2 and VC of varying amount were added into nanocrystalline WC-10Co cemented carbides as grain growth inhibitors. To investigate the microstructure of Co binder phase in the WC-10Co cemented carbides, Co-W-C alloy was fabricated at the temperature of sintering process for the WC-10Co cemented carbides. The hardness of WC-10Co cemented carbides increased with decreasing WC grain size following a Hall-Petch-type relationship. The fracture toughness of WC-10Co cemented carbides increases with increasing HCP/FCC ratio of Co binder phase by HCP/FCC phase transformation. (C) 2001 Elsevier Science Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Elsevier Sci Ltd | - |
dc.title | Mechanical properties of WC–10Co cemented carbides sintered from nanocrystalline spray conversion processed powders | - |
dc.type | Article | - |
dc.identifier.wosid | 000173068800022 | - |
dc.identifier.scopusid | 2-s2.0-0035845088 | - |
dc.type.rims | ART | - |
dc.citation.volume | 19 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 397 | - |
dc.citation.endingpage | 403 | - |
dc.citation.publicationname | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Hong, Soon-Hyung | - |
dc.contributor.nonIdAuthor | Cha, SI | - |
dc.contributor.nonIdAuthor | Kim, BK | - |
dc.type.journalArticle | Article; Proceedings Paper | - |
dc.subject.keywordAuthor | WC-Co | - |
dc.subject.keywordAuthor | cemented carbides | - |
dc.subject.keywordAuthor | nanocrystalline | - |
dc.subject.keywordAuthor | hardness | - |
dc.subject.keywordAuthor | fracture toughness | - |
dc.subject.keywordPlus | WC-CO | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | HARDMETALS | - |
dc.subject.keywordPlus | TOUGHNESS | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.