Mora, JulioGarcía, PalomaCarreño, FranciscoGonzález, MiguelGutiérrez, MarcosMontes, LauraRico, Victor J.López-Santos, CarmenVicente Gómara, AdriánRivero Fuente, Pedro J.Rodríguez Trías, RafaelLarumbe Abuin, SilviaAcosta, CarolinaIbáñez-Ibáñez, PabloCorozzi, Alessandro.Raimondo, MariarosaKozera, RafalPrzybyszewski, BartlomiejGonzález-Elipe, Agustín R.Borrás, AnaRedondo, FranciscoAgüero, Alina2023-06-232023-06-232023Mora, J., García, P., Carreño, F., González, M., Gutiérrez, M., Montes, L., Gavira, V. R., López-Santos, C., Vicente, A., Rivero, P., Rodríguez, R., Larumbe, S., Acosta, C., Ibáñez-Ibáñez, P., Corozzi, A., Raimondo, M., Kozera, R., Przybyszewski, B., González-Elipe, A. R., … Agüero, A. (2023). Setting a comprehensive strategy to face the runback icing phenomena. Surface and Coatings Technology, 465, 129585. https://doi.org/10.1016/j.surfcoat.2023.1295850257-897210.1016/j.surfcoat.2023.129585https://academica-e.unavarra.es/handle/2454/45622The development of anti-icing robust surfaces is a hot topic nowadays and particularly crucial in the aeronautics or wind energy sectors as ice accretion can compromise safety and power generation efficiency. However, the current performance of most anti-icing strategies has been proven insufficient for such demanding applications, particularly in large unprotected zones, which located downstream from thermally protected areas, may undergo secondary icing. Herein, a new testing methodology is proposed to evaluate accretion mechanisms and secondary icing phenomena through, respectively, direct impact and running-wet processes and systematically applied to anti-icing materials including commercial solutions and the latest trends in the state-of-the-art. Five categories of materials (hard, elastomeric, polymeric matrix, SLIPS and superhydrophobic) with up to fifteen formulations have been tested. This Round-Robin approach provides a deeper understanding of anti-icing mechanisms revealing the strengths and weaknesses of each material. The conclusion is that there is no single passive solution for anti-ice protection. Thus, to effectively protect a given real component, different tailored materials fitted for each particular zone of the system are required. For this selection, shape analysis of such a component and the impact characteristics of water droplets under real conditions are needed as schematically illustrated for aeronautic turbines.application/pdfapplication/zipeng© 2023 The Authors. This is an open access article under the CC BY-NC-ND license.Aeronautic icingAnti-icing materialRunback icingSurfaceWettinginfo:eu-repo/semantics/article2023-06-22info:eu-repo/semantics/openAccess