Femtosecond laser surface texturing of a nickel-based superalloy
| Autor: | Geoff Dearden, Ken Watkins, N. G. Semaltianos, Walter Perrie, P. French, Martin Sharp |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.industry medicine.medical_treatment General Physics and Astronomy chemistry.chemical_element Surfaces and Interfaces General Chemistry Surface finish Substrate (electronics) Condensed Matter Physics Ablation Laser Surfaces Coatings and Films law.invention Superalloy Nickel Optics chemistry law Femtosecond medicine Surface modification Composite material business |
| Zdroj: | Applied Surface Science. 255:2796-2802 |
| ISSN: | 0169-4332 |
| Popis: | Femtosecond laser (180 fs, 775 nm, 1 kHz) surface modification of the nickel-based superalloy C263 is investigated. The laser beam was scanned onto areas on the substrate with macroscopic dimensions using different fluences (F = 0.28–30 J/cm2), speeds (υ = 1–10 mm/s) and number of overscans (5–90). The evolution of surface morphology, roughness, ablation depth and volume ablation rate with laser micromachining parameters were determined. The surface morphology is characterized by ripples for low average powers while for high average powers the surface becomes porous. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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