Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering
Copper-alumina nanocomposites of 0.5, 1, 3, 5, 7 vol.% alumina (average size <50 nm) reinforced in copper matrix were fabricated using spark plasma sintering (SPS) technique. Another set of microcomposites containing 1, 5, 20 vol.% of alumina (average size ∼10 μm) had been fabricated to compare t...
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| Format: | Article |
| Language: | English |
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De Gruyter
2015-05-01
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| Series: | Journal of the Mechanical Behavior of Materials |
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| Online Access: | https://doi.org/10.1515/jmbm-2015-0003 |
| _version_ | 1818390914338390016 |
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| author | Dash Khushbu Chaira Debasis Ray Bankim Chandra |
| author_facet | Dash Khushbu Chaira Debasis Ray Bankim Chandra |
| author_sort | Dash Khushbu |
| collection | DOAJ |
| description | Copper-alumina nanocomposites of 0.5, 1, 3, 5, 7 vol.% alumina (average size <50 nm) reinforced in copper matrix were fabricated using spark plasma sintering (SPS) technique. Another set of microcomposites containing 1, 5, 20 vol.% of alumina (average size ∼10 μm) had been fabricated to compare the physical as well as mechanical attributes of composites with variation of reinforcement particle size. These micro- and nano-composites have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) followed by microhardness, nanoindentation hardness, and wear measurements. It has been found that hardness values are higher for nanocomposites as compared to microcomposites. It is also found that wear resistance increases with increasing alumina content. The microcomposites show better wear resistance than nanocomposites for the same composition. The interaction of copper and alumina results in the formation of CuAlO2 which manifests differential interfacial phenomenon. We have obtained 95.82% densification and 93.17 HV hardness for spark plasma sintered Cu-20 vol.% Al2O3 microcomposite. The wear rate is appreciably low, that is, 0.86×10-4 mm3N-1m-1 for 20 vol.% alumina reinforced copper microcomposite. |
| first_indexed | 2024-12-14T05:05:12Z |
| format | Article |
| id | doaj.art-a54417b605534033b2b575b29a0c9948 |
| institution | Directory Open Access Journal |
| issn | 0334-8938 2191-0243 |
| language | English |
| last_indexed | 2024-12-14T05:05:12Z |
| publishDate | 2015-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Journal of the Mechanical Behavior of Materials |
| spelling | doaj.art-a54417b605534033b2b575b29a0c99482022-12-21T23:16:07ZengDe GruyterJournal of the Mechanical Behavior of Materials0334-89382191-02432015-05-01241-2253410.1515/jmbm-2015-0003Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sinteringDash Khushbu0Chaira Debasis1Ray Bankim Chandra2Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela – 769008, IndiaDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela – 769008, IndiaDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela – 769008, IndiaCopper-alumina nanocomposites of 0.5, 1, 3, 5, 7 vol.% alumina (average size <50 nm) reinforced in copper matrix were fabricated using spark plasma sintering (SPS) technique. Another set of microcomposites containing 1, 5, 20 vol.% of alumina (average size ∼10 μm) had been fabricated to compare the physical as well as mechanical attributes of composites with variation of reinforcement particle size. These micro- and nano-composites have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) followed by microhardness, nanoindentation hardness, and wear measurements. It has been found that hardness values are higher for nanocomposites as compared to microcomposites. It is also found that wear resistance increases with increasing alumina content. The microcomposites show better wear resistance than nanocomposites for the same composition. The interaction of copper and alumina results in the formation of CuAlO2 which manifests differential interfacial phenomenon. We have obtained 95.82% densification and 93.17 HV hardness for spark plasma sintered Cu-20 vol.% Al2O3 microcomposite. The wear rate is appreciably low, that is, 0.86×10-4 mm3N-1m-1 for 20 vol.% alumina reinforced copper microcomposite.https://doi.org/10.1515/jmbm-2015-0003cu-al2o3microcompositenanocompositenanoindentationspark plasma sintering |
| spellingShingle | Dash Khushbu Chaira Debasis Ray Bankim Chandra Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering Journal of the Mechanical Behavior of Materials cu-al2o3 microcomposite nanocomposite nanoindentation spark plasma sintering |
| title | Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering |
| title_full | Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering |
| title_fullStr | Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering |
| title_full_unstemmed | Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering |
| title_short | Microstructural evolution and sliding wear studies of copper-alumina micro- and nano-composites fabricated by spark plasma sintering |
| title_sort | microstructural evolution and sliding wear studies of copper alumina micro and nano composites fabricated by spark plasma sintering |
| topic | cu-al2o3 microcomposite nanocomposite nanoindentation spark plasma sintering |
| url | https://doi.org/10.1515/jmbm-2015-0003 |
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