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dc.contributor.author | Numakura, Hiroshi | en |
dc.contributor.author | Watanabe, Tatsuru | en |
dc.contributor.author | Uchida, Makoto | en |
dc.contributor.author | Yamabe-Mitarai, Yoko | en |
dc.contributor.author | Bannai, Eisuke | en |
dc.contributor.alternative | 沼倉, 宏 | ja |
dc.date.accessioned | 2007-10-19T01:45:26Z | - |
dc.date.available | 2007-10-19T01:45:26Z | - |
dc.date.issued | 2006 | - |
dc.identifier.issn | 1547-7037 | - |
dc.identifier.uri | http://hdl.handle.net/2433/48904 | - |
dc.description.abstract | The diffusion in iridium-rich Ir-Nb alloys has been studied by single-phase interdiffusion experiments. The chemical diffusion coefficient has been measured for the primary fcc solidsolution and the L12 ordered compound Ir3Nb in the temperature range between 1650 and 1950 °C, using Ir/Ir-8Nb and Ir-26Nb/Ir-28Nb diffusion couples, respectively (numbers indicate mol%). While the chemical diffusion coefficient in the solid-solution phase is close to the tracer self-diffusion coefficient of pure iridium, the diffusion in the compound phase is extremely slow: the chemical diffusion coefficient is 1⁄40 to 1⁄50 of that in the solid solution. The low diffusion rate in the compound must be beneficial for high-temperature performance of refractory superalloys based on the Ir-Nb system. | en |
dc.language.iso | eng | - |
dc.publisher | Springer Boston | en |
dc.rights | ©ASM International | en |
dc.title | Chemical Diffusion in the Iridium-Rich A1 and L12 Phases in the Ir-Nb System | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.ncid | AA1191989X | - |
dc.identifier.jtitle | Journal of phase equilibria and diffusion | en |
dc.identifier.volume | 27 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 638 | - |
dc.identifier.epage | 643 | - |
dc.relation.doi | 10.1361/1054770306X153666 | - |
dc.textversion | publisher | - |
dcterms.accessRights | open access | - |
出現コレクション: | 学術雑誌掲載論文等 |
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