Nonnenmacher, Katharina and Kleebe, Hans-Joachim and Rohrer, Jochen and Ionescu, Emanuel and Riedel, Ralf and Soraru, G. (2013):
Carbon Mobility in SiOC/HfO2Ceramic Nanocomposites.
In: Journal of the American Ceramic Society, 96 (7), Wiley-VCH Verlag GmbH & Co. KGaA, pp. 2058-2060, ISSN 00027820,
[Online-Edition: http://dx.doi.org/10.1111/jace.12440],
[Article]
Abstract
Silicon oxycarbide/hafnia (SiOC/HfO2) ceramic nanocomposites were studied by transmission electron microscopy (TEM) upon isothermal annealing at 1300°C for 1–200 h. TEM investigations in conjunction with energy-dispersive X-ray spectroscopy (EDS) analysis revealed a pronounced reduction in the local carbon content in close proximity to internal surfaces. Such small microcracks are a consequence of the polymer-to-ceramic transition and, hence, are commonly formed upon thermal annealing. The profiles of the carbon content between surface and bulk were analyzed employing error functions to yield carbon diffusivities.
| Item Type: | Article |
|---|---|
| Erschienen: | 2013 |
| Creators: | Nonnenmacher, Katharina and Kleebe, Hans-Joachim and Rohrer, Jochen and Ionescu, Emanuel and Riedel, Ralf and Soraru, G. |
| Title: | Carbon Mobility in SiOC/HfO2Ceramic Nanocomposites |
| Language: | English |
| Abstract: | Silicon oxycarbide/hafnia (SiOC/HfO2) ceramic nanocomposites were studied by transmission electron microscopy (TEM) upon isothermal annealing at 1300°C for 1–200 h. TEM investigations in conjunction with energy-dispersive X-ray spectroscopy (EDS) analysis revealed a pronounced reduction in the local carbon content in close proximity to internal surfaces. Such small microcracks are a consequence of the polymer-to-ceramic transition and, hence, are commonly formed upon thermal annealing. The profiles of the carbon content between surface and bulk were analyzed employing error functions to yield carbon diffusivities. |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume: | 96 |
| Number: | 7 |
| Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA |
| 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: | 19 Feb 2014 13:18 |
| Official URL: | http://dx.doi.org/10.1111/jace.12440 |
| Identification Number: | doi:10.1111/jace.12440 |
| Funders: | Funded by Deutsche Forschungsgemeinschaft. Grant Number: 1181., Funded by Ministry of Higher Education, Research and Arts in Hesse, Germany. |
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