Highly regular hexagonally-arranged nanostructures on Ni-W alloy tapes upon irradiation with ultrashort UV laser pulses

Porta-Velilla, Luis (Universidad de Zaragoza) ; Turan, Neslihan ; Cubero, Alvaro (Universidad de Zaragoza) ; Shao, Wei ; Li, Hongtao ; Fuente, German F. de la ; Martinez, Elena ; Larrea, Angel ; Castro, Miguel (Universidad de Zaragoza) ; Koralay, Haluk ; Cavdar, Sukru ; Bonse, Joern ; Angurel, Luis A. (Universidad de Zaragoza)

Resumen: Nickel tungsten alloy tapes (Ni-5 at% W, 10 mm wide, 80 mu m thick, biaxially textured) used in second-generation high temperature superconductor (2G-HTS) technology were laser-processed in air with ultraviolet ps-laser pulses (355 nm wavelength, 300 ps pulse duration, 250-800 kHz pulse repetition frequency). By employing optimized surface scan-processing strategies, various laser-generated periodic surface structures were generated on the tapes. Particularly, distinct surface microstructures and nanostructures were formed. These included sub-wavelength-sized highly-regular hexagonally-arranged nano-protrusions, wavelength-sized line-grating-like laser-induced periodic surface structures (LIPSS, ripples), and larger irregular pyramidal microstructures. The induced surface morphology was characterized in depth by electron-based techniques, including scanning electron microscopy (SEM), electron back scatter diffraction (EBSD), cross-sectional transmission electron microscopy (STEM/TEM) and energy dispersive X-ray spectrometry (EDS). The in-depth EBSD crystallographic analyses indicated a significant impact of the material initial grain orientation on the type of surface nanostructure and microstructure formed upon laser irradiation. Special emphasis was laid on high-resolution material analysis of the hexagonally-arranged nano-protrusions. Their formation mechanism is discussed on the basis of the interplay between electromagnetic scattering effects followed by hydrodynamic matter re-organization after the laser exposure. The temperature stability of the hexagonally-arranged nano-protrusion was explored in post-irradiation thermal annealing experiments, in order to qualify their suitability in 2G-HTS fabrication technology with initial steps deposition temperatures in the range of 773-873 K.

Idioma: Inglés

DOI: 10.3390/nano12142380

Año: 2022

Publicado en: Nanomaterials 12, 14 (2022), 2380 [23 pp.]
ISSN: 2079-4991

Factor impacto JCR: 5.3 (2022)

Categ. JCR: PHYSICS, APPLIED rank: 39 / 160 = 0.244 (2022) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 51 / 107 = 0.477 (2022) - Q2 - T2
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 58 / 178 = 0.326 (2022) - Q2 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 110 / 343 = 0.321 (2022) - Q2 - T1

Factor impacto CITESCORE: 7.4 - Chemical Engineering (Q1) - Materials Science (Q1)

Factor impacto SCIMAGO: 0.811 - Chemical Engineering (miscellaneous) (Q1) - Materials Science (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T54-20R
Financiación: info:eu-repo/grantAgreement/EC/H2020/951730/EU/Laser-induced hierarchical micro-/nano-structures for controlled cell adhesion at implants/LaserImplant
Financiación: info:eu-repo/grantAgreement/ES/MICINN/AEI/PID2020-113034RB-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)