Effects of MoSi2 additions on the properties of Hf– and Zr–B2 composites produced by pressureless sintering

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
Hauptverfasser: Silvestroni, Laura, Sciti, Diletta
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creator Silvestroni, Laura
Sciti, Diletta
description 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.
doi_str_mv 10.1016/j.scriptamat.2007.02.040
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title Effects of MoSi2 additions on the properties of Hf– and Zr–B2 composites produced by pressureless sintering
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