Effects of MoSi2 additions on the properties of Hf– and Zr–B2 composites produced by pressureless sintering
Composites in the HfB2-(5-20MoSi2) system were produced from powder mixtures and densified through pressureless sintering at 1950 deg C. Microstructure and mechanical properties were compared with pressureless sintered ZrB2-based composites containing the same amount of MoSi2. The addition of MoSi2...
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| Veröffentlicht in: | Scripta materialia 2007-07, Vol.57 (2), p.165-168 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Composites in the HfB2-(5-20MoSi2) system were produced from powder mixtures and densified through pressureless sintering at 1950 deg C. Microstructure and mechanical properties were compared with pressureless sintered ZrB2-based composites containing the same amount of MoSi2. The addition of MoSi2 allowed the achievement of highly dense bodies without degrading the high-temperature behaviour. Flexural strength measured at 1500 deg C in air were in the range of 480-580MPa. |
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| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2007.02.040 |