New route to synthesize preceramic polymers for zirconium carbide

A preceramic polymer, polyzirconosaal （PZSA）, was synthesized by the ligand-exchange reaction between polyzirconoxane （PZO） and salicyl alcohol （SA）. The precursor was air-stable and exhibited excellent solubility and rheology. These properties are useful for the processing of C/C-ZrC composites v/a...

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Veröffentlicht in:	Chinese chemical letters 2012-09, Vol.23 (9), p.1075-1078
Hauptverfasser:	Tao, Xue Yu, Qiu, Wen Feng, Li, Hao, Zhao, Tong, Wei, Xian Yong
Format:	Artikel
Sprache:	eng
Schlagworte:	Preceramic polymer Precursor infiltration and pyrolysis Zirconium carbide 交换反应先驱体浸渍裂解先驱体聚合物合成工艺处理碳化锆陶瓷产率颗粒复合材料
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Beschreibung
Zusammenfassung:	A preceramic polymer, polyzirconosaal （PZSA）, was synthesized by the ligand-exchange reaction between polyzirconoxane （PZO） and salicyl alcohol （SA）. The precursor was air-stable and exhibited excellent solubility and rheology. These properties are useful for the processing of C/C-ZrC composites v/a precursor infiltration and pyrolysis （PIP） process. The polymer to ceramic conversion was investigated by TG, XRD and TEM. Nanosized ZrC was formed by pyrolysis of this precursor at 1300 ℃ in argon with ceramic yield of 57.8%.
ISSN:	1001-8417 1878-5964
DOI:	10.1016/j.cclet.2012.06.013