Analysis of polyethylene-particle filled SiCN precursor and the resulting porous ceramics with emphasis on using micro computed tomography
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概要
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Porous, polymer derived SiCN ceramics are synthesized from a solid polysilazane (PSZMS) and an ultra-high molecular weight polyethylene (PE) as sacrificial filler. Common analytical methods for the investigation of the thermal decomposition processes and the formed (macro) porosities, such as thermogravimetry and mercury porosimetry respectively, were supplemented by micro computed tomography (µ-CT) measurements. Due to its non-destructive nature, this method enables the comparative analysis of both, the in the first step formed preceramic duromers, to distinguish between the different polymers, as well as the resulting porous ceramics. The via µ-CT determined values for the two polymer phases after cross-linking are in a good agreement with the used original amounts of PE and PSZMS. In contrast the values for the porosity resulting from the PE filler and for the formed SiCN ceramic after pyrolysis differ in greater extent due to the limiting resolution that can be achieved by applying µ-CT measurements.
- 公益社団法人 日本セラミックス協会の論文
著者
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SCHMALZ Thomas
Ceramic Materials Engineering, University of Bayreuth
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HAUSHERR Jan
Ceramic Materials Engineering, University of Bayreuth
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MÜLLER Walter
Ceramic Materials Engineering, University of Bayreuth
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KRAUS Tobias
Ceramic Materials Engineering, University of Bayreuth
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KRENKEL Walter
Ceramic Materials Engineering, University of Bayreuth
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KEMPE Rhett
Inorganic Chemistry II, University of Bayreuth
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MOTZ Günter
Ceramic Materials Engineering, University of Bayreuth
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MOTZ Günter
Ceramic Materials Engineering, University of Bayreuth