Enhancing thermal conductivity of 6061 Al plate via graphene dip coating
The development of thermally conductive lightweight materials holds paramount importance for optimizing heat dissipation in automobile components. This study investigated three distinct techniques for coating graphene onto 6061 Al plates: direct, aluminum nitride (AlN)-aided, and poly-vinyl-alcohol...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542400365X |
| _version_ | 1797247809590657024 |
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| author | Seungjin Nam Sungyeom Kim Daeyoung Kim Sungho Song Jinkyu Lee Hyoung Seop Kim Hyokyung Sung Hyunjoo Choi |
| author_facet | Seungjin Nam Sungyeom Kim Daeyoung Kim Sungho Song Jinkyu Lee Hyoung Seop Kim Hyokyung Sung Hyunjoo Choi |
| author_sort | Seungjin Nam |
| collection | DOAJ |
| description | The development of thermally conductive lightweight materials holds paramount importance for optimizing heat dissipation in automobile components. This study investigated three distinct techniques for coating graphene onto 6061 Al plates: direct, aluminum nitride (AlN)-aided, and poly-vinyl-alcohol (PVA)-aided coatings. The direct coating approach, via dipping into a graphene suspension, resulted in nonuniform graphene distribution due to the poor wettability of Al with graphene. AlN formation on the surface of a 6061 Al plate before graphene dip coating (AlN-aided coating) considerably improved the wettability of the surface with graphene. When using the PVA-aided coating method, 6061 Al plate was treated with PVA, followed by immersion in a graphene oxide (GO) suspension, achieving uniform GO coverage. This was facilitated by strong bonding between functional groups formed on the plate through treatment with PVA and those present on the GO surface. Directly coated samples exhibited a bonding strength of ∼1 MPa, whereas the samples coated using AlN- and PVA-aided methods showed bonding strengths of ∼3 and ∼10 MPa, respectively. Furthermore, AlN- and PVA-aided coatings improved thermal conductivity by ∼5.6% and ∼8.5%. This study proposes a facile and effective graphene-derivative coating process to improve the heat dissipation of Al-based materials. |
| first_indexed | 2024-03-08T00:22:56Z |
| format | Article |
| id | doaj.art-751e95853d524f04840ed1f8cf90fb3c |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:04:36Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-751e95853d524f04840ed1f8cf90fb3c2024-03-24T06:58:12ZengElsevierJournal of Materials Research and Technology2238-78542024-03-012931263134Enhancing thermal conductivity of 6061 Al plate via graphene dip coatingSeungjin Nam0Sungyeom Kim1Daeyoung Kim2Sungho Song3Jinkyu Lee4Hyoung Seop Kim5Hyokyung Sung6Hyunjoo Choi7Department of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea; Department of Materials Science and Engineering, Korea University, Seoul, Republic of KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, Republic of KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, Republic of KoreaDivision of Advanced Materials Engineering, Kongju National University, Chungnam, Republic of KoreaSETOPIA Co., Ltd, Seoul, Republic of KoreaGraduate Institute of Ferrous & Eco Materials Technology, Pohang University of Science and Technology(POSTECH), Pohang, Republic of Korea; Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, Japan; Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Seoul, South KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea; Corresponding author.Department of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea; Corresponding author.The development of thermally conductive lightweight materials holds paramount importance for optimizing heat dissipation in automobile components. This study investigated three distinct techniques for coating graphene onto 6061 Al plates: direct, aluminum nitride (AlN)-aided, and poly-vinyl-alcohol (PVA)-aided coatings. The direct coating approach, via dipping into a graphene suspension, resulted in nonuniform graphene distribution due to the poor wettability of Al with graphene. AlN formation on the surface of a 6061 Al plate before graphene dip coating (AlN-aided coating) considerably improved the wettability of the surface with graphene. When using the PVA-aided coating method, 6061 Al plate was treated with PVA, followed by immersion in a graphene oxide (GO) suspension, achieving uniform GO coverage. This was facilitated by strong bonding between functional groups formed on the plate through treatment with PVA and those present on the GO surface. Directly coated samples exhibited a bonding strength of ∼1 MPa, whereas the samples coated using AlN- and PVA-aided methods showed bonding strengths of ∼3 and ∼10 MPa, respectively. Furthermore, AlN- and PVA-aided coatings improved thermal conductivity by ∼5.6% and ∼8.5%. This study proposes a facile and effective graphene-derivative coating process to improve the heat dissipation of Al-based materials.http://www.sciencedirect.com/science/article/pii/S223878542400365XAl alloyGrapheneDip coatingThermal conductivityBonding stress |
| spellingShingle | Seungjin Nam Sungyeom Kim Daeyoung Kim Sungho Song Jinkyu Lee Hyoung Seop Kim Hyokyung Sung Hyunjoo Choi Enhancing thermal conductivity of 6061 Al plate via graphene dip coating Journal of Materials Research and Technology Al alloy Graphene Dip coating Thermal conductivity Bonding stress |
| title | Enhancing thermal conductivity of 6061 Al plate via graphene dip coating |
| title_full | Enhancing thermal conductivity of 6061 Al plate via graphene dip coating |
| title_fullStr | Enhancing thermal conductivity of 6061 Al plate via graphene dip coating |
| title_full_unstemmed | Enhancing thermal conductivity of 6061 Al plate via graphene dip coating |
| title_short | Enhancing thermal conductivity of 6061 Al plate via graphene dip coating |
| title_sort | enhancing thermal conductivity of 6061 al plate via graphene dip coating |
| topic | Al alloy Graphene Dip coating Thermal conductivity Bonding stress |
| url | http://www.sciencedirect.com/science/article/pii/S223878542400365X |
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