Preparation and Properties of High-Toughness AlMgB<sub>14</sub> Material
This study employed a composite method using TiB<sub>2</sub>-HfC dual-component additive to prepare AlMgB<sub>14</sub> ceramic composite material. The morphology and phase composition of the AlMgB<sub>14</sub> ceramic powder were characterized using scanning elect...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/10/764 |
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| Summary: | This study employed a composite method using TiB<sub>2</sub>-HfC dual-component additive to prepare AlMgB<sub>14</sub> ceramic composite material. The morphology and phase composition of the AlMgB<sub>14</sub> ceramic powder were characterized using scanning electron microscopy (SEM) and an X-ray diffractometer (XRD). The phase evolution, microstructure, and mechanical properties of the sintered composite were investigated. The experimental results indicate that the AlMgB<sub>14</sub>-based composite sintered at 1450 °C exhibited excellent comprehensive properties, with a Vickers hardness of 25.3 GPa, a fracture toughness of 6.9 MPa·m<sup>1/2</sup>, a bending strength of 615 MPa, and a density of 3.22 g/cm<sup>3</sup>. Additionally, a solid solution second phase was observed in the AlMgB<sub>14</sub> material. Through a dual-component synergistic composite strategy, this study enhanced the toughness of AlMgB<sub>14</sub> material without significantly compromising other properties, providing a new design approach for the development of low-cost, high-performance AlMgB<sub>14</sub>-based composites. |
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| ISSN: | 2079-4991 |