The effect of laser in-situ induced graphene-like micro-texture on the friction and wear properties of ductile cast iron
| Autor: | Wang Zhiwen, Wei Yuan, Cong Jianchen, Hongyu Zheng, Weicheng Liu, Prakash Chander, Linda Y. L. Wu |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fabrication
Materials science Ductile cast iron Laser texturing 02 engineering and technology engineering.material 01 natural sciences law.invention Biomaterials law Fiber laser 0103 physical sciences Composite material 010302 applied physics Mining engineering. Metallurgy Graphene Metals and Alloys TN1-997 Picosecond laser Tribology 021001 nanoscience & nanotechnology Laser Hardness Surfaces Coatings and Films Tribological properties Ceramics and Composites engineering Cast iron 0210 nano-technology Tribometer |
| Zdroj: | Journal of Materials Research and Technology, Vol 12, Iss, Pp 2407-2413 (2021) |
| ISSN: | 2238-7854 |
| Popis: | Picosecond fiber laser was subjected on surface of ductile cast iron to induce graphene-like micro-texture array and enhance the tribological properties. The size of the dimples was regulated in the range of 5 μm–110 μm. The in-situ fabrication process was carried out on the workpiece surface in parallel manner and the scanning speed can be up to 3 m/s. The formation mechanism of graphene-like structure was analyzed. The tribological properties of the textured samples were investigated using a ball-on-disk tribometer. The results showed that the laser textured samples exhibit low coefficient of friction and the anti-wear properties were improved significantly. The textured sample showed no distinct wear pit, while the non-textured sample showed typical wear pit with depth up to 15 μm. Volume wear rate was reduced by 69.6 ± 6.9%. The graphene-like micro-texture array conducted by picosecond fiber laser scanning will not change the material isotropic, and the improved tribological properties are attributed to the combined effects of the increased surface hardness, improved heat dispersion property and entrapment of wear debris. |
| Databáze: | OpenAIRE |
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