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Laser line scanning for large area surface microstructure control

AuthorsSantos, H.; Angurel, Luis A.; Trujillo, F. J.; Muñoz Rojas, David ; Masse, C.; Nguyen, V. H.; Bea, J. A.; Fuente, Germán F. de la
KeywordsLaser line scanning
Surface processing
Issue Date2019
CitationXXXVII Reunión Bienal de la Real Sociedad Española de Química (2019)
AbstractLarge-scale industrial materials must comply with crucial requirements beyond their technical specifications. The overall economy of any material system designed is a priority, leading to a complex equilibrium between costs and performance. Ultimate feasibility assessments rely on materials design efforts, particularly in processes exposed to extreme corrosive environments as well as those with high quality requirements in terms of interfacial defects in multilayer devices. In such systems surface engineering plays a key role, offering the means to maximize the life span of a certain material system. In parallel to the intrinsic cost savings derived in terms of maintenance, certain techniques allow an extreme control of the processing conditions, resulting in lower consumption of reactants, time and energy. This is the case of laser surface processing, particularly regarding laser line scanning (LLS). Such technique combines the transverse movement of a target with the fixed scanning linear movement of the laser spot along the axis perpendicular to the probe’s displacement. This technique has been applied to well-studied systems as Fe-Al protective coatings, rendering useful development paths to improve the alloying performance addressing subjects as: grain microstructure orientation, stoichiometric gradients smothering, segregation dispersion or interface defects density. The present work takes into account the above considerations, in an attempt to adapt this novel Laser Line Scanning method to process functional metal oxide coatings. With the help of standard simulation models, attempts to densify coated surfaces, as well as to control microstructure, will be described.
DescriptionResumen del póster presentado a la XXXVII Reunión Bienal de la Real Sociedad Española de Química, celebrada en Donostia-San Sebastián del 26 al 30 de mayo de 2019.
Appears in Collections:(ICMA) Comunicaciones congresos
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