| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
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| Presentation Title |
Laser Powder Directed Energy Deposition (LP-DED) of Single- and Multi-Layer HfB2 Coating |
| Author(s) |
Shir Andreev Batat, Vladimir Popov, Zlatomir Apostolov Apostolov, Noam Eliaz |
| On-Site Speaker (Planned) |
Shir Andreev Batat |
| Abstract Scope |
HfB2 ultrahigh temperature ceramic (UHTC) for extreme environments was deposited by Laser Powder Directed Energy Deposition (LP-DED) on different substrate materials: 316L steel, pure tungsten, Ti6Al4V, and Cf/HfB2 composite, using different process parameters. The DEDed samples were characterized using light microscopy, scanning electron microscopy, adhesion testing, microhardness testing, X-ray photoelectron spectroscopy, X-ray diffraction, and differential scanning calorimetry. Melting of HfB2 was observed. Evaporation of SS316L was noticed and was accompanied by incorporation of the ceramic material into the substrate. The adhesion of HfB2 to the W-substrate was good, the coating conformed to the substrate surface, and intermixing of HfB2 with W was detected. Although the adhesion of the HfB2 coating to the Ti substrate was poor, the coating itself was quite dense with no cohesive failure. The Cf/HfB2 composite melted at some regions, in correlation with the laser power, and the adhesion of the HfB2 to it was not strong. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Ceramics, High-Temperature Materials |