2026-04-22T10:23:07Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/62512024-05-07T14:20:15Zcom_20.500.11984_473col_20.500.11984_478

High-temperature tribological performance of functionally graded Stellite 6/WC metal matrix composite coatings manufactured by laser-directed energy deposition Zabala, Alaitz Llavori, Inigo Otegi, Nagore Ostolaza, Marta Arrizubieta, Jon Iñaki Lamikiz, Aitzol friction coating metal matrix composite functionally graded materials high temperature laser-directed energy deposition Wear-driven tool failure is one of the main hurdles in the industry. This issue can be addressed through surface coating with ceramic-reinforced metal matrix composites. However, the maximum ceramic content is limited by cracking. In this work, the tribological behaviour of the functionally graded WC-ceramic-particle-reinforced Stellite 6 coatings is studied. To that end, the wear resistance at room temperature and 400 °C is investigated. Moreover, the tribological analysis is supported by crack sensitivity and hardness evaluation, which is of utmost importance in the processing of composite materials with ceramic-particle-reinforcement. Results indicate that functionally graded materials can be employed to increase the maximum admissible WC content, hence improving the tribological behaviour, most notably at high temperatures. Additionally, a shift from abrasive to oxidative wear is observed in high-temperature wear testing. 2024-02-02T08:53:21Z 2024-02-02T08:53:21Z 2024 http://purl.org/coar/resource_type/c_6501 2223-7704 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=174049 https://hdl.handle.net/20.500.11984/6251 eng Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ © 2023 The Authors Springer Friction