Influence of thermal shocks on the strength of silicon carbide
| Autor: | H. Schiffers, E. Wallura, A. Brandstädter, K. Koizlik, J. Linke, H. Nickel |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Nuclear and High Energy Physics
Thermonuclear fusion Materials science Bending chemistry.chemical_compound Flux (metallurgy) Nuclear Energy and Engineering chemistry visual_art Thermal Crack initiation Fracture (geology) Silicon carbide visual_art.visual_art_medium General Materials Science Ceramic Composite material |
| Zdroj: | Journal of Nuclear Materials. :367-369 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/0022-3115(91)90101-c |
| Popis: | Low-Z ceramics such as SiC have a potential as a material candidate for plasma-facing components in thermonuclear fusion reactors. To investigate the thermo-mechanical behaviour of SiC, high-heat flux experiments were performed on small rectangular test samples. To get additional information on the influence of thermal shocks on the mechanical properties of ceramics, a set of 4-point bending test specimens was exposed to heat loads just below the damaging threshold. Emphasis was laid on the detection of the point of crack initiation; a qualitative and quantitative evaluation was performed on the fracture surfaces. The strength of these pre-damaged materials was compared to the as-manufactured grades. |
| Databáze: | OpenAIRE |
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