(Hf0.5Ta0.5)C ultra-high temperature ceramic solid solution nanowires

Ultra-high temperature ceramic (UHTC) nanowires are potential reinforcement materials due to it com-bines the perfect properties of bulk materials and unique geometric properties of one-dimensional (1D) nanostructures. Thus, developing 1D nanomaterials that have excellent morphology and structure reten-tion in ultra-high temperature environments is of prime importance to bring their outstanding perfor-mance into full play. Herein, we report the novel solid solution ((Hf0.5Ta0.5)C) ceramic nanowires, which could not only maintain morphological and structural stability at 1900 degrees C but also exhibit 1D nanostruc-tures under oxyacetylene scouring and ablation at 2300 degrees C. The morphology evolution of nanowires obeys the Rayleigh instability mechanism, and the internal structure and element distribution of nanowires re-main unchanged even if the surface atoms are rearranged. The fascinating nanowires are demonstrated to have great potential as ideal reinforcement materials of composite materials and toughening phases of ceramics that are applied in ultra-high temperature environments, as well as excellent performance enhancement phases of functional materials. Our work may provide new insights into the development of ceramic nanowires and widen their applications.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

Automated summary

We report a novel solid solution ((Hf0.5Ta0.5)C) ceramic nanowires, which can maintain morphological and structural stability at 1900 degrees C and exhibit one-dimensional nanostructures at 2300 degrees C. These nanowires have great potential as ideal reinforcement materials for composite materials and toughening phases of ceramics in ultra-high temperature environments, as well as excellent performance enhancement phases of functional materials. Our work may provide new insights for the development of ceramic nanowires and broaden their applications.