ポリマーから誘導されたケイ素系セラミックス : 合成・性質・応用に関する総説(<ゲストエディターによる特集>有機-無機変換プロセス)

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概要

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• This review presents the synthesis, characterization techniques, processing and potential applications of siliconbased ceramic materials derived from organosilicon polymers. The Si-ceramics are prepared by thermolysis of molecular precursors. The influence of the initial molecular structure of the precursor on the properties of the final ceramic material and its applications is discussed. The thermolytic decomposition of suitable Si-based polymers provides materials which are denoted as polymer-derived ceramics (PDCs). In particular, this procedure is a promising method for the preparation of ternary and multinary silicon-based ceramics in the system SiCNO. There is no other synthetic approach known to produce e.g. SiCO or SiCN based ceramics. In the case of PDCs route, common preceramic polymers are poly (organosilazanes), poly (organosilylcarbodiimides) and poly (organosiloxanes). One basic advantage of the PDC route is that the materials can be easily shaped in form of fibers, layers or bulk composite materials by applying processing techniques established in the plastic industry. The PDCs in general exhibit enhanced thermomechanical properties, i.e., temperature stabilities up to approximately 1500℃. Recent investigations have shown that in some cases the high temperature stability in terms of decomposition and/or crystallization can be increased even up to 2000℃ if the preceramic polymer contains some amount of boron. The composition and microstructure of the PDC are a result of the molecular structure of the preceramic polymer. Therefore, the observed differences in the macroscopic properties are also closely related to the variation of composition and solid state structure of these materials.

• 社団法人日本セラミックス協会の論文
• 2006-06-01

著者

• Hauser Ralf

  Institut Fur Materialwissenschaft Technische Universitat Darmstadt

• MERA Gabriela

  Institut fur Materialwissenschaft, Technische Universitat Darmstadt

• KLONCZYNSKI Alexander

  Robert Bosch GmbH, Stuttgart

• Mera Gabriela

  Institut Fur Materialwissenschaft Technische Universitat Darmstadt

• Klonczynski Alexander

  Robert Bosch Gmbh Stuttgart

関連論文

• 高温用分離膜としての応用を思考したポリマープレカーサーからのSiBCN系セラミックスの合成(有機-無機変換プロセス)
• 新規な非酸化物系ゾルゲル法によるメソポーラスアモルファスSi-C-N膜の合成と評価(有機-無機変換プロセス)
• ポリマーから誘導されたケイ素系セラミックス : 合成・性質・応用に関する総説(有機-無機変換プロセス)

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