کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1622452 | 1516394 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Behavior of explosive compacted/consolidated of nanometric copper powders
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Behavior of explosive compacted/consolidated of nanometric copper powders Behavior of explosive compacted/consolidated of nanometric copper powders](/preview/png/1622452.png)
چکیده انگلیسی
Nanosized particles of copper have been explosive compacted/consolidated with different process conditions using a cylindrical configuration as lay out, in order to preserve nanocrystallinity in 3D parts. After processing the specimens were characterized regarding the density, microstructure, grain size, and hardness using Archimedes method, SEM, XRD and depth-sensing indentation, respectively. The results show a significant bulk densification after explosion, associated to a nanocrystalline character, similar to the starting powders. For the sharpest parameters selected for the explosion a bimodal distribution of grain size is visible by SEM comparable to 2D nanocrystalline copper deposited by sputtering. The properties of “sintered parts” are compared with those of a standard resulting from densification of micropowders using the same technology, and the results highlight the future role of explosive densification of ductile nanopowder metals, as a suitable technique for macro- and micromanufacturing of nanostructured parts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 483, Issues 1â2, 26 August 2009, Pages 235-238
Journal: Journal of Alloys and Compounds - Volume 483, Issues 1â2, 26 August 2009, Pages 235-238
نویسندگان
A.R. Farinha, R. Mendes, J. Baranda, R. Calinas, M.T. Vieira,