Synthesis of α-Al2O3–graphene composite: a novel product to provide multi-functionalities on steel strip surface
| Autor: | Shubhra Bajpai, A.K. Sahu, Saurabh Kundu, Tapan Dash, Surendra Kumar Biswal, Abhinay Rajput, A. N. Bhagat, Susanta Kumar Biswal, Binod Bihari Palei, Tapan Kumar Rout, Bijoy Kumar Satpathy |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Chrome plating Graphene General Chemical Engineering Composite number General Engineering General Physics and Astronomy Substrate (chemistry) engineering.material law.invention Surface conductivity Coating law visual_art engineering visual_art.visual_art_medium General Earth and Planetary Sciences General Materials Science Composite material Ball mill Nitriding General Environmental Science |
| Zdroj: | SN Applied Sciences. 2 |
| ISSN: | 2523-3971 2523-3963 |
| DOI: | 10.1007/s42452-020-2672-9 |
| Popis: | We successfully prepare a composite retaining crystalline structure of α-Al2O3 and graphene using a dry (no chemical) planetary ball milling technique. The composite was then coated efficiently on steel substrate via a non-transferred plasma torch. Good adhesion with almost uniform microstructural distribution of α-Al2O3–graphene composite (4 wt%) on steel substrate was shown in FESEM study. It was remarkably observed that α-Al2O3–graphene (4 wt%) composite coated on steel substrate improves its surface properties exhibiting hardness and Young’s modulus of 370 ± 11 VHN and 292 ± 22 GPa, respectively. This sample is also found to show significant high electrical conductivity of ~ 6.6 × 106 S/m. This composite can be an alternate coating to hard chrome coating, carburisation and nitriding with added advantage of surface conductivity. |
| Databáze: | OpenAIRE |
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