 | HIGH-TEMPERATURE DEFORMATION OF PRECURSOR-DERIVED MATERIALS
|
| | Günter Thurn1), Martin Christ1), Jerome Canel1) and Fritz Aldinger1) |
| | 1) Max-Planck-Institut für Metallforschung and Institut für Nichtmetallische Anorganische Materialien, Universität Stuttgart Pulvermetallurgisches Laboratorium |
| | The high-temperature deformation behavior of amorphous Si-C-N and Si-B-C-N precursor-derived ceramics was characterized by compression creep tests in a temperature range between 1200°C and 1550°C. The deformation consists of a stress-dependent component proportional to the applied stress and stress-independent shrinkage. The deformation can be described as viscous flow. A deformation mechanism model, developed for metallic glasses is applied on the ceramic materials. It can be shown that the time and temperature dependence of the viscosity is in good accordance with the predictions of such model. |
| | | |
