RT info:eu-repo/semantics/article T1 Possible alternatives to critical elements in coatings for extreme applications A1 Grilli, Maria Luisa . A1 Valerini, Daniele . A1 Piticescu, Radu Robert A1 Bellezze, Tiziano . A1 Yilmaz, Mehmet . A1 Rinaldi, Antonio A1 Cuesta López, Santiago A1 Rizzo, Antonella . K1 Materiales K1 Materials K1 Materia-Estructura K1 Matter-Constitution AB Surface functionalisation and protection have been used since a long time for improving specific properties of materials such as lubrication, water repellence, brightness, and for increasing durability of objects and tools. Among the different kinds of surface treatments used to achieve the required properties, the use of coatings is fundamental to guarantee substrate durability in harsh environments. Extreme working conditions of temperature, pressure, irradiation, wear and corrosion occur in several applications, thus very often requiring bulk material protection by means of coatings. In this study, three main classes of coatings used in extreme conditions are considered: i) hard and superhard coatings for application in machining tools, ii) coatings for high temperatures (thermal barrier coatings), and iii) coatings against corrosion. The presence of critical elements in such coatings (Cr, Y, W, Co, etc.) is analysed and the possibility to use CRMs-free substitutes is reviewed. The role of multilayers and nanocomposites in tailoring coating performances is also discussed for thermal barrier and superhard coatings. PB IOP Publising SN 1757-8981 YR 2018 FD 2018 LK http://hdl.handle.net/10259/4836 UL http://hdl.handle.net/10259/4836 LA eng NO E-MRS Fall Symposium I: Solutions for Critical Raw Materials Under Extreme Conditions18–21 September 2017, Warsaw, Poland NO COST Action “Solutions for Critical Raw Materials under Extreme Conditions”, supported by COST(European Cooperation in Science and Technology) and H2020 Grant Agreement TWINNING692216 "The virtual Center for sustainable development of Advanced Materials operating underextreme conditions"- Acronym SUPERMAT DS Repositorio Institucional de la Universidad de Burgos RD 28-mar-2024