Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique
In this study, the nano-aluminum powder was reinforced with a hybrid of copper and graphene nanoplatelets (GNPs). The ratios of GNPs were 0 wt%, 0.4 wt%, 0.6 wt%, 1.2 wt% and 1.8 wt%. To avoid the reaction between aluminum and graphene and, consequently, the formation of aluminum carbide, the GNP wa...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/22/7174 |
| _version_ | 1797458611931185152 |
|---|---|
| author | Hossam M. Yehia Reham A. H. Elmetwally Abdelhalim M. Elhabak Omayma A. El-Kady Ahmed Yehia Shash |
| author_facet | Hossam M. Yehia Reham A. H. Elmetwally Abdelhalim M. Elhabak Omayma A. El-Kady Ahmed Yehia Shash |
| author_sort | Hossam M. Yehia |
| collection | DOAJ |
| description | In this study, the nano-aluminum powder was reinforced with a hybrid of copper and graphene nanoplatelets (GNPs). The ratios of GNPs were 0 wt%, 0.4 wt%, 0.6 wt%, 1.2 wt% and 1.8 wt%. To avoid the reaction between aluminum and graphene and, consequently, the formation of aluminum carbide, the GNP was first metalized with 5 wt% Ag and then coated with the predetermined 15 wt% Cu by the electroless coating process. In addition, the coating process was performed to improve the poor wettability between metal and ceramic. The Al/(GNPs-Ag)Cu nanocomposites with a high relative density of 99.9% were successfully prepared by the powder hot-pressing techniques. The effects of (GNPs/Ag) and Cu on the microstructure, density, hardness, and compressive strength of the Al-Cu nanocomposite were studied. As a result of agitating the GNPs during the cleaning and silver and Cu-plating, a homogeneous distribution was achieved. Some layers formed nano-tubes. The Al<sub>4</sub>C<sub>3</sub> phase was not detected due to coating GNPs with Cu. The Cu<sub>9</sub>Al<sub>4</sub> intermetallic was formed during the sintering process. The homogeneous dispersion of Cu and different ratios of GNs, good adhesion, and the formation of the new Cu<sub>9</sub>Al<sub>4</sub> intermetallic improved in hardness. The pure aluminum sample recorded 216.2 HV, whereas Al/Cu reinforced with 1.8 GNs recorded 328.42 HV with a 51.9% increment. The compressive stress of graphene samples was improved upon increasing the GNPs contents. The Al-Cu/1.8 GNs sample recorded 266.99 MPa. |
| first_indexed | 2024-03-09T16:39:38Z |
| format | Article |
| id | doaj.art-eb4559ed07e44afd80eb6961709db9e4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T16:39:38Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-eb4559ed07e44afd80eb6961709db9e42023-11-24T14:53:40ZengMDPI AGMaterials1996-19442023-11-011622717410.3390/ma16227174Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing TechniqueHossam M. Yehia0Reham A. H. Elmetwally1Abdelhalim M. Elhabak2Omayma A. El-Kady3Ahmed Yehia Shash4Mechanical Department, Faculty of Technology and Education, Helwan University, Cairo 11795, EgyptFaculty of Engineering, Cairo University, Cairo 12613, EgyptFaculty of Engineering, Cairo University, Cairo 12613, EgyptPowder Technology Department, Central Metallurgical Research and Development Institute (CMRDI), Helwan 11421, EgyptFaculty of Engineering, Cairo University, Cairo 12613, EgyptIn this study, the nano-aluminum powder was reinforced with a hybrid of copper and graphene nanoplatelets (GNPs). The ratios of GNPs were 0 wt%, 0.4 wt%, 0.6 wt%, 1.2 wt% and 1.8 wt%. To avoid the reaction between aluminum and graphene and, consequently, the formation of aluminum carbide, the GNP was first metalized with 5 wt% Ag and then coated with the predetermined 15 wt% Cu by the electroless coating process. In addition, the coating process was performed to improve the poor wettability between metal and ceramic. The Al/(GNPs-Ag)Cu nanocomposites with a high relative density of 99.9% were successfully prepared by the powder hot-pressing techniques. The effects of (GNPs/Ag) and Cu on the microstructure, density, hardness, and compressive strength of the Al-Cu nanocomposite were studied. As a result of agitating the GNPs during the cleaning and silver and Cu-plating, a homogeneous distribution was achieved. Some layers formed nano-tubes. The Al<sub>4</sub>C<sub>3</sub> phase was not detected due to coating GNPs with Cu. The Cu<sub>9</sub>Al<sub>4</sub> intermetallic was formed during the sintering process. The homogeneous dispersion of Cu and different ratios of GNs, good adhesion, and the formation of the new Cu<sub>9</sub>Al<sub>4</sub> intermetallic improved in hardness. The pure aluminum sample recorded 216.2 HV, whereas Al/Cu reinforced with 1.8 GNs recorded 328.42 HV with a 51.9% increment. The compressive stress of graphene samples was improved upon increasing the GNPs contents. The Al-Cu/1.8 GNs sample recorded 266.99 MPa.https://www.mdpi.com/1996-1944/16/22/7174nano-aluminumnano-copperelectroless coatinggraphenehardnesscompressive strength |
| spellingShingle | Hossam M. Yehia Reham A. H. Elmetwally Abdelhalim M. Elhabak Omayma A. El-Kady Ahmed Yehia Shash Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique Materials nano-aluminum nano-copper electroless coating graphene hardness compressive strength |
| title | Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique |
| title_full | Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique |
| title_fullStr | Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique |
| title_full_unstemmed | Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique |
| title_short | Manufacturing of Aluminum Nano-Composites Reinforced with Nano-Copper and High Graphene Ratios Using Hot Pressing Technique |
| title_sort | manufacturing of aluminum nano composites reinforced with nano copper and high graphene ratios using hot pressing technique |
| topic | nano-aluminum nano-copper electroless coating graphene hardness compressive strength |
| url | https://www.mdpi.com/1996-1944/16/22/7174 |
| work_keys_str_mv | AT hossammyehia manufacturingofaluminumnanocompositesreinforcedwithnanocopperandhighgrapheneratiosusinghotpressingtechnique AT rehamahelmetwally manufacturingofaluminumnanocompositesreinforcedwithnanocopperandhighgrapheneratiosusinghotpressingtechnique AT abdelhalimmelhabak manufacturingofaluminumnanocompositesreinforcedwithnanocopperandhighgrapheneratiosusinghotpressingtechnique AT omaymaaelkady manufacturingofaluminumnanocompositesreinforcedwithnanocopperandhighgrapheneratiosusinghotpressingtechnique AT ahmedyehiashash manufacturingofaluminumnanocompositesreinforcedwithnanocopperandhighgrapheneratiosusinghotpressingtechnique |