Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs
Abstract A laser processing technique is proposed for the processing of a 2.5 mm thick carbon nanotube (CNT) composite bipolar plate for proton exchange membrane fuel cells (PEMFCs). This study aims to understand laser interaction with the CNT composite plate experimentally using a pulsed nanosecond...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-28700-2 |
| _version_ | 1811171708926689280 |
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| author | Dawit Musse Dongkyoung Lee |
| author_facet | Dawit Musse Dongkyoung Lee |
| author_sort | Dawit Musse |
| collection | DOAJ |
| description | Abstract A laser processing technique is proposed for the processing of a 2.5 mm thick carbon nanotube (CNT) composite bipolar plate for proton exchange membrane fuel cells (PEMFCs). This study aims to understand laser interaction with the CNT composite plate experimentally using a pulsed nanosecond laser. Penetration depth, top width, spatter width, and overall physical morphologies are studied. Scanning electron microscope (SEM) and 3D Scanning Confocal Microscope were used for observation and measurements. Based on that, a parametric investigation is conducted and reported systematically. Most importantly, the pulse repetition rate presents a unique nature of interaction that resulted in a critical repetition rate distinguishing three operational regimes. The physical and chemical properties of the regimes are further analyzed by Vickers microhardness testing and energy dispersive X-ray (EDX) analyses performed on the surface and cross-section of each specimen. The results reveal that the pulse repetition rate introduces changes in mechanical properties and chemical compositions in the vicinity of the processed region. In conclusion, lower pulse repetition should be favored for less impact on mechanical properties, chemical composition, and morphological aspects. |
| first_indexed | 2024-04-10T17:19:35Z |
| format | Article |
| id | doaj.art-95e27cb068cb4150b4cf5ea6e7bb2394 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T17:19:35Z |
| publishDate | 2023-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-95e27cb068cb4150b4cf5ea6e7bb23942023-02-05T12:13:06ZengNature PortfolioScientific Reports2045-23222023-02-0113111910.1038/s41598-023-28700-2Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCsDawit Musse0Dongkyoung Lee1Department of Future Convergence Engineering, Cheonan College of Engineering, Kongju National UniversityDepartment of Future Convergence Engineering, Cheonan College of Engineering, Kongju National UniversityAbstract A laser processing technique is proposed for the processing of a 2.5 mm thick carbon nanotube (CNT) composite bipolar plate for proton exchange membrane fuel cells (PEMFCs). This study aims to understand laser interaction with the CNT composite plate experimentally using a pulsed nanosecond laser. Penetration depth, top width, spatter width, and overall physical morphologies are studied. Scanning electron microscope (SEM) and 3D Scanning Confocal Microscope were used for observation and measurements. Based on that, a parametric investigation is conducted and reported systematically. Most importantly, the pulse repetition rate presents a unique nature of interaction that resulted in a critical repetition rate distinguishing three operational regimes. The physical and chemical properties of the regimes are further analyzed by Vickers microhardness testing and energy dispersive X-ray (EDX) analyses performed on the surface and cross-section of each specimen. The results reveal that the pulse repetition rate introduces changes in mechanical properties and chemical compositions in the vicinity of the processed region. In conclusion, lower pulse repetition should be favored for less impact on mechanical properties, chemical composition, and morphological aspects.https://doi.org/10.1038/s41598-023-28700-2 |
| spellingShingle | Dawit Musse Dongkyoung Lee Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs Scientific Reports |
| title | Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs |
| title_full | Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs |
| title_fullStr | Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs |
| title_full_unstemmed | Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs |
| title_short | Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs |
| title_sort | parametric study of pulsed nanosecond laser interaction with carbon nanotube composite bipolar plate for pemfcs |
| url | https://doi.org/10.1038/s41598-023-28700-2 |
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