【摘要】 高熵合金是近年来快速发展的一种新型合金，尤其是难熔高熵合金，在高温下具有优异的力学性能，在高温尤其是超高温下具有可重复使用潜力，但其高温抗氧化性能不足成为限制其实际工程应用的关键因素之一。传统合金常通过微合金化方式，向合金中添加Al、Cr、Si等元素以提高其高温抗氧化性能，但添加量通常有限，因此限制了其抗氧化性能的提升。高熵合金的多主元特性，使其在抗氧化合金设计上具有更大的可能性。本文重点讨论近年来提高高熵合金抗氧化性能的研究进展，并从添加有助于抗氧化性能提高的Al、Cr、Si等元素以及制备抗氧化涂层等方面，对难熔高熵合金抗氧化性能的进一步提高进行探讨和展望。更多还原

【Abstract】 High entropy alloys have been newly developed in recent years, among which the refractory high entropy alloys obtain excellent high-temperature mechanical properties, thus showing great potential application as structural materials at ultra-high temperatures. However, their low oxidation resistance at high temperatures limits the practical engineering applications. The conventional way to enhance oxidation resistance is alloying elements such as Al, Cr, Si and so on, but the additional amount is usually restricted by other factors, which greatly limits the oxidation resistance performance. The multi-component characteristics of high-entropy alloys allow them to be more likely to alloy more oxidation resistance-promoting elements. In this paper, the recent progress in improving the oxidation resistance of high-entropy alloys was reviewed. The approaches to improve the oxidation resistance of refractory high-entropy alloys were prospected via adding Al, Cr and Si elements and the formation of antioxidant coatings.更多还原