TU Darmstadt / ULB / TUbiblio

Processing route dramatically influencing the nanostructure of carbon-rich SiCN and SiBCN polymer-derived ceramics. Part I: Low temperature thermal transformation

Gao, Yan and Mera, Gabriela and Nguyen, Hong and Morita, Koji and Kleebe, Hans-Joachim and Riedel, Ralf (2012):
Processing route dramatically influencing the nanostructure of carbon-rich SiCN and SiBCN polymer-derived ceramics. Part I: Low temperature thermal transformation.
In: Journal of the European Ceramic Society, Elsevier Science Publishing, pp. 1857-1866, 32, (9), ISSN 09552219,
[Online-Edition: http://dx.doi.org/10.1016/j.jeurceramsoc.2011.09.012],
[Article]

Abstract

In this study, the significant effect of the processing route on the nanostructure evaluation of carbon-rich SiCN and SiBCN polymer-derived ceramics is reported. For the first time, bulk carbon-rich SiCN and SiBCN ceramics are successfully produced by warm pressing of polyphenylvinylsilylcarbodiimide and polyborophenylsilylcarbodiimide. The bulk samples were compared with their analogous powder samples with respect to the developed nanostructure. Representative temperatures of 1100 and 1400 °C were chosen in order to investigate the effect of processing route used on the crystallization behavior of those samples. As the solid-state structure of polymer-derived ceramics (PDCs) is highly sensitive to the molecular structure of the precursor, the variation of processing route and pyrolysis temperature during the polymer to ceramic transformation and decomposition enables to alter the nanostructure of PDCs. It was found that the bulk carbon-rich SiCN and SiBCN ceramics show an improved thermal stability against crystallization as compared to their powder analogues.

Item Type: Article
Erschienen: 2012
Creators: Gao, Yan and Mera, Gabriela and Nguyen, Hong and Morita, Koji and Kleebe, Hans-Joachim and Riedel, Ralf
Title: Processing route dramatically influencing the nanostructure of carbon-rich SiCN and SiBCN polymer-derived ceramics. Part I: Low temperature thermal transformation
Language: English
Abstract:

In this study, the significant effect of the processing route on the nanostructure evaluation of carbon-rich SiCN and SiBCN polymer-derived ceramics is reported. For the first time, bulk carbon-rich SiCN and SiBCN ceramics are successfully produced by warm pressing of polyphenylvinylsilylcarbodiimide and polyborophenylsilylcarbodiimide. The bulk samples were compared with their analogous powder samples with respect to the developed nanostructure. Representative temperatures of 1100 and 1400 °C were chosen in order to investigate the effect of processing route used on the crystallization behavior of those samples. As the solid-state structure of polymer-derived ceramics (PDCs) is highly sensitive to the molecular structure of the precursor, the variation of processing route and pyrolysis temperature during the polymer to ceramic transformation and decomposition enables to alter the nanostructure of PDCs. It was found that the bulk carbon-rich SiCN and SiBCN ceramics show an improved thermal stability against crystallization as compared to their powder analogues.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 32
Number: 9
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Precursor-organic, Electron microscopy, icrostructure, Processing, Carbon-rich polymer-derived SiCN and SiBCN ceramic
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 21 Mar 2013 09:40
Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2011.09.012
Identification Number: doi:10.1016/j.jeurceramsoc.2011.09.012
Funders: Financial support by the grants funded under the MWN (Materials World Network) of the DFG and the National Science Foundation, as well as LOEWE-Zentrum AdRIA (Adaptronik—Research, Innovation, Application), funded by the state of Hesse, Germany, and the Fonds der Chemischen Industrie, Frankfurt (Germany) is gratefully acknowledged.
Export:
Suche nach Titel in: TUfind oder in Google

Optionen (nur für Redakteure)

View Item View Item