| Abstract Scope |
Many machine components operate under dry sliding at elevated temperatures in oxidizing environments, where rapid material loss and functional degradation are common. However, systematic wear data for high-entropy and medium-entropy alloys (HEAs/MEAs) up to 1000 °C remain limited. Here, we reported the wear behaviour of two popular MEAs, FeCoNi and CrCoNi, from room temperature to 1000 °C. We identify that wear-mechanism transitions are associated with alloy elements, oxidation rates, and oxide types. By emphasizing tribo-oxidation rather than mechanical properties alone, this work reframes alloy design from a mechanical-centred paradigm to a tribo-oxidation-informed strategy. |