Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder
The recycling of metallic waste to create more valuable materials and their valorization into upgraded metal-based composites constitutes an important field of study. The composite industry nowadays considers environmental improvements as important as other properties of the materials. In the presen...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/395612 |
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| author | V. G. Karayannis A. K. Moutsatsou |
| author_facet | V. G. Karayannis A. K. Moutsatsou |
| author_sort | V. G. Karayannis |
| collection | DOAJ |
| description | The recycling of metallic waste to create more valuable materials and their valorization into upgraded metal-based composites constitutes an important field of study. The composite industry nowadays considers environmental improvements as important as other properties of the materials. In the present paper, nickel powder was recycled from ferrous scrap, a low-cost and largely available material, by an effective hydrometallurgical recovery process. Then, this recycled powder was successfully used along with particulate α-alumina to prepare oblong nickel-based composite specimens with ceramic reinforcement loadings ranging from 0 to 30 wt.% by applying powder processing manufacturing techniques including cold isostatic pressing (CIP) and sintering. The microstructures obtained were characterized, the specimens were subjected to three-point bend tests, and their fracture behaviour was evaluated. By increasing the % ceramic reinforcement content, density clearly decreases while strengthening is achieved, thus leading to development of lightweight and enhanced oblong nickel-alumina composites. The composite microstructure, and particularly the metal-ceramic interface bonding, has a strong impact on fracture behaviour upon external loading. |
| format | Article |
| id | doaj-art-84af2e76a44548889d20df067d652615 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-84af2e76a44548889d20df067d6526152025-02-03T01:32:08ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422012-01-01201210.1155/2012/395612395612Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel PowderV. G. Karayannis0A. K. Moutsatsou1Department of Pollution Control Technologies, Technological Educational Institute (TEI) of West Macedonia, Kila, 50100 Kozani, GreeceSchool of Chemical Engineering, National Technical University of Athens (NTUA), 9 Iroon Polytechniou Street, 15773 Athens, GreeceThe recycling of metallic waste to create more valuable materials and their valorization into upgraded metal-based composites constitutes an important field of study. The composite industry nowadays considers environmental improvements as important as other properties of the materials. In the present paper, nickel powder was recycled from ferrous scrap, a low-cost and largely available material, by an effective hydrometallurgical recovery process. Then, this recycled powder was successfully used along with particulate α-alumina to prepare oblong nickel-based composite specimens with ceramic reinforcement loadings ranging from 0 to 30 wt.% by applying powder processing manufacturing techniques including cold isostatic pressing (CIP) and sintering. The microstructures obtained were characterized, the specimens were subjected to three-point bend tests, and their fracture behaviour was evaluated. By increasing the % ceramic reinforcement content, density clearly decreases while strengthening is achieved, thus leading to development of lightweight and enhanced oblong nickel-alumina composites. The composite microstructure, and particularly the metal-ceramic interface bonding, has a strong impact on fracture behaviour upon external loading.http://dx.doi.org/10.1155/2012/395612 |
| spellingShingle | V. G. Karayannis A. K. Moutsatsou Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder Advances in Materials Science and Engineering |
| title | Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder |
| title_full | Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder |
| title_fullStr | Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder |
| title_full_unstemmed | Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder |
| title_short | Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder |
| title_sort | synthesis and characterization of nickel alumina composites from recycled nickel powder |
| url | http://dx.doi.org/10.1155/2012/395612 |
| work_keys_str_mv | AT vgkarayannis synthesisandcharacterizationofnickelaluminacompositesfromrecyclednickelpowder AT akmoutsatsou synthesisandcharacterizationofnickelaluminacompositesfromrecyclednickelpowder |