Academic Journal
Synthesis of core-shell Al/Al 2 O 3 composite through aluminum powder oxidation in hot water and its characterization
| العنوان: | Synthesis of core-shell Al/Al 2 O 3 composite through aluminum powder oxidation in hot water and its characterization |
|---|---|
| المؤلفون: | Ambaryan, G N, Vlaskin, M S, Shkolnikov, E I, Zhuk, A Z |
| المصدر: | Journal of Physics: Conference Series ; volume 1687, issue 1, page 012030 ; ISSN 1742-6588 1742-6596 |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2020 |
| الوصف: | Simple and potentially energy efficient way for synthesis of Al/Al 2 O 3 composites is described. Synthesis method is based on aluminum powder oxidation in water at 100-200 °C and following drying and calcination at 600 °C. Aluminum powder with average size of about 40 urn that is currently applied in additive manufacturing was used. Present work was devoted to the study of oxidation degree of aluminum and so the propagation depth and structure of Al 2 O 3 shell in composite’s matrix. AI/Al 2 O 3 composites were produced in different regimes with different maximum temperature and duration of the process of aluminium oxidation in water. Aluminum oxidation degree and aluminium content in obtained Al/Al 2 O 3 were changed in the range from 5.5 % and 90.1 % to 21.3 % and 66.2 % respectively. The size of single crystals of Al 2 O 3 in shell was changed from about 6 nm to 200 nm and the thickness of Al 2 O 3 shell was changed from about 400 nm to 1000 nm by changing the regime for Al/Al 2 O 3 composite production. Experimental results showed that Al 2 O 3 shell was well clutched with aluminum core. Shell structure had cracks aroused by calcination process. Size distribution for obtained composites was very close for that of initial aluminum powder. All of these characteristics recommend the obtained Al/Al 2 O 3 composites for additive manufacturing. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| DOI: | 10.1088/1742-6596/1687/1/012030 |
| DOI: | 10.1088/1742-6596/1687/1/012030/pdf |
| الاتاحة: | http://dx.doi.org/10.1088/1742-6596/1687/1/012030 https://iopscience.iop.org/article/10.1088/1742-6596/1687/1/012030/pdf https://iopscience.iop.org/article/10.1088/1742-6596/1687/1/012030 |
| Rights: | http://creativecommons.org/licenses/by/3.0/ ; https://iopscience.iop.org/info/page/text-and-data-mining |
| رقم الانضمام: | edsbas.D30EE26C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/1742-6596/1687/1/012030 |
|---|