Monolithic ZrB2‐based UHTCs using polymer‐derived Si(Zr,B)CN as sintering aid

In the present work, dense ZrB2‐based monoliths were produced via hot‐pressing of ZrB2 powders coated with amorphous polymer‐derived SiCN, SiZrCN, or SiZrBCN at relatively moderate temperatures (i.e., 1800℃). Thus, ZrB2 particles were embedded in polymer‐derived ceramic shell were realized by coatin...

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Veröffentlicht in:	Journal of the American Ceramic Society 2022-01, Vol.105 (1), p.99-110
Hauptverfasser:	Feng, Bo, Fetzer, Ann‐Katrin, Ulrich, Anke Silvia, Christian Galetz, Mathias, Kleebe, Hans‐Joachim, Ionescu, Emanuel
Format:	Artikel
Sprache:	eng
Schlagworte:	Ceramic coatings Grain boundaries Microstructure microstructure characterization Phase composition Polymers polymer‐derived ceramic nanocomposites Polysilazane Prepolymers Pyrolysis Refractory materials Silicon carbonitride Sintering (powder metallurgy) Sintering aids transmission electron microscopy ultrahigh‐temperature ceramics Zirconium carbide Zirconium compounds Zirconium dioxide ZrB2
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