Dual-phase eutectic ceramics with improved hardness and toughness via nano-coherent high-entropy oxides

Nature Communications 2026 Open access

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Authors: Xu Wang, Y D Zhong, Huadong Li, Ye Yuan, Xiangyu Huang, Cui Zhou, Detian Wan, Y Tian, Xingyue Zhai, Jihong Zhu, Ziad Moumni, J H Lu
+1 more Weihong Zhang
DOI: 10.1038/s41467-026-74505-y
Cited by: 1
References: 49

Abstract

Alumina-based eutectic ceramics exhibited high high-temperature strength but their intrinsic brittleness constrained broad structural applications. Here, we broke this limitation by introducing high-entropy rare-earth aluminate (REAlO3, RE = Gd0.25Eu0.25Nd0.25Sm0.25) into the Al2O3 matrix via directional solidification. The resulting dual-phase eutectics exhibited a unique architecture where single-crystalline Al2O3 was interlocked with bicrystalline high-entropy REAlO3, forming nanoscale coherent grain boundaries (~57.5 nm) and semi-coherent phase boundaries (lattice misfit

Fields of Study & Subjects

High Entropy Alloys Studies High-Temperature Coating Behaviors Subcritical and Supercritical Water Processes

Publication details

Journal / source
Nature Communications
Publisher
Springer Science and Business Media LLC
Volume
17
Issue
1
Publication date
12 June 2026
Language
EN