HfB2 ceramic polycrystals: A low-temperature metal-like ceramic at high temperatures?
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
Fersiynau electronig
Dolenni
Dangosydd eitem ddigidol (DOI)
Hafnium diboride (HfB2) is a highly refractory (melting above 3000°C) ceramic with many potential applications at high temperatures. To enable its use at temperature for extended periods its high-temperature plasticity must be known. This paper examines the mechanical response at temperatures between 900°C and 2000°C in air and in a reducing atmosphere, interpreting the data in the frame of classical models for the plasticity of compact-packed metals at low temperatures. In particular, the Friedel law and the principle of similitude for dislocation patterning are assessed. This reveals that HfB2 is a singular example of a ceramic material with “metal” mechanical behaviour.
Allweddeiriau
| Iaith wreiddiol | Saesneg |
|---|---|
| Rhif yr erthygl | 114037 |
| Cyfnodolyn | Scripta Materialia |
| Cyfrol | 203 |
| Dyddiad ar-lein cynnar | 14 Meh 2021 |
| Dynodwyr Gwrthrych Digidol (DOIs) | |
| Statws | Cyhoeddwyd - Hyd 2021 |
| Cyhoeddwyd yn allanol | Ie |