Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries
The paper describes a theoretical study of the Ostwald ripening of two-dimensional small-size precipitates of a newly formed phase at the grain boundary of finite thickness, taking into account the diffusion of impurity atoms from the grain interior to the grain boundary. The precipitate growth is b...
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| Format: | Article |
| Language: | English |
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Sumy State University
2012-10-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2012/3/articles/jnep_2012_V4_03013.pdf |
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| author | A.V. Koropov |
| author_facet | A.V. Koropov |
| author_sort | A.V. Koropov |
| collection | DOAJ |
| description | The paper describes a theoretical study of the Ostwald ripening of two-dimensional small-size precipitates of a newly formed phase at the grain boundary of finite thickness, taking into account the diffusion of impurity atoms from the grain interior to the grain boundary. The precipitate growth is believed to be limited by the impurity-atom diffusion in the grain boundary. The asymptotic time dependences are found for the average and critical precipitate radius, supersaturation of solid solution of impurity atoms in the grain boundary, precipitate size distribution function, precipitate density, and for the factor of grain boundary filling with precipitates. A discussion of the limits of validity of obtained results is given. |
| format | Article |
| id | doaj-art-b4d39621c60f4b0d84bd0a561ee7790e |
| institution | OA Journals |
| issn | 2077-6772 |
| language | English |
| publishDate | 2012-10-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-b4d39621c60f4b0d84bd0a561ee7790e2025-08-20T02:23:31ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722012-10-0143030131Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain BoundariesA.V. KoropovThe paper describes a theoretical study of the Ostwald ripening of two-dimensional small-size precipitates of a newly formed phase at the grain boundary of finite thickness, taking into account the diffusion of impurity atoms from the grain interior to the grain boundary. The precipitate growth is believed to be limited by the impurity-atom diffusion in the grain boundary. The asymptotic time dependences are found for the average and critical precipitate radius, supersaturation of solid solution of impurity atoms in the grain boundary, precipitate size distribution function, precipitate density, and for the factor of grain boundary filling with precipitates. A discussion of the limits of validity of obtained results is given.http://jnep.sumdu.edu.ua/download/numbers/2012/3/articles/jnep_2012_V4_03013.pdfSupersaturated Solid SolutionsDiffusion DecompositionPrecipitatesOstwald RipeningReal CrystalsMacrodefectsGrain BoundariesGrain Boundary DiffusionAgeing Metal AlloysReactor Constructional MaterialsRadiation StrengthDiffusion GrowthVacancy Pore |
| spellingShingle | A.V. Koropov Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries Журнал нано- та електронної фізики Supersaturated Solid Solutions Diffusion Decomposition Precipitates Ostwald Ripening Real Crystals Macrodefects Grain Boundaries Grain Boundary Diffusion Ageing Metal Alloys Reactor Constructional Materials Radiation Strength Diffusion Growth Vacancy Pore |
| title | Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries |
| title_full | Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries |
| title_fullStr | Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries |
| title_full_unstemmed | Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries |
| title_short | Ostwald Ripening of Diffusion-Limited Small-Size Precipitates at Grain Boundaries |
| title_sort | ostwald ripening of diffusion limited small size precipitates at grain boundaries |
| topic | Supersaturated Solid Solutions Diffusion Decomposition Precipitates Ostwald Ripening Real Crystals Macrodefects Grain Boundaries Grain Boundary Diffusion Ageing Metal Alloys Reactor Constructional Materials Radiation Strength Diffusion Growth Vacancy Pore |
| url | http://jnep.sumdu.edu.ua/download/numbers/2012/3/articles/jnep_2012_V4_03013.pdf |
| work_keys_str_mv | AT avkoropov ostwaldripeningofdiffusionlimitedsmallsizeprecipitatesatgrainboundaries |