Surface Morphologies in Ultra-short Pulsed Laser Processing of Stainless-Steel at High Repetition Rate
Anno: 2019
Autori: Lazzini G., Gemini L., Lutey AHA., Kling R., Romoli L., Allegrini M ., Fuso F.
Affiliazione autori: Univ Parma, Dept Engn & Architecture, I-43124 Parma, Italy; Inst Opt Aquitaine, ALPhANOV, F-33400 Talence, France; Univ Pisa, Dipartimento Fis Enrico Fermi, I-56127 Pisa, Italy; CNR, INO, I-56124 Pisa, Italy
Abstract: Stainless-steel is ablated with femtosecond laser pulses at high repetition rate. A multi-pass, high spatial overlap laser scanning strategy is applied in order to cope with the requirements for large-scale machining of high aspect ratio structures. Topography of the processed surfaces is analyzed via Shear Force Microscopy scans, with the main aim to investigate morphology changes as a function of process parameters. Quantitative assessment of local height variations enables a detailed investigation of the produced features. Depending on the process parameters, in particular on laser fluence and repetition rate, a transition from small islands to large bumps is observed, explained in terms of feature coalescence.
Giornale/Rivista: INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
Volume: 20 (9) Da Pagina: 1465 A: 1474
Parole chiavi: Nanostructured surfaces; Laser machining; Shear force microscopy; Directed energy surface treatmentsDOI: 10.1007/s12541-019-00174-1Citazioni: 5dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-14Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui