| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1483597 | Journal of Non-Crystalline Solids | 2007 | 10 Pages |
Abstract
The crystallization behavior of two polymer-derived Si/B/C/N ceramics with similar compositions lying close to the three-phase field BN + SiC + C was investigated by (high-resolution) transmission electron microscopy. The materials were high-temperature mass stable up to T = 2000 °C. During thermolysis at 1050 °C a homogeneous amorphous solid formed. SiC crystallization started at about 1400 °C. Further annealing to higher temperatures up to 2000 °C led to formation of microstructures composed of SiC crystals embedded into a structured BNCx matrix phase. With increasing temperature, both the size of the crystallites and the ordering of the matrix phase increased.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Natascha Bunjes, Anita Müller, Wilfried Sigle, Fritz Aldinger,