| Autor: |
Tomáš Primus, Martin Novák, Pavel Zeman, František Holešovský |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Acta Polytechnica, Vol 63, Iss 1, Pp 36-49 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1805-2363 |
| DOI: |
10.14311/AP.2023.63.0036 |
| Popis: |
Ultra-short pulsed laser ablation may be used for high-precision machining with very low thermal influence on the processed materials. Due to this reason, lasers are increasingly used for processing of advanced materials, such as titanium alloys, nickel-based alloys or steel, every year. In this study, four advanced technical materials were analysed and compared under femtosecond laser irradiation with three different wavelengths. The main laser-material interaction parameters were identified, namely the ablation threshold and removal efficiency parameters. Higher removal rates were found for Ti6Al4V alloy with all three harmonic wavelengths. To increase process productivity, a method of increasing the repetition rate and scanning speed was presented. With the maximum repetition rate, the productivity increased five-fold with a similar removed depth and surface quality. Finally, the suitability of the identified parameters with regard to quality and productivity was demonstrated for fabrication of two complex structures – honeycomb and dot – which has the potential to improve friction properties of advanced materials. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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