Electron microscopy
Crystal Percentage in Metallic Glasses Made from Melts
- Practical Electron Microscopy and Database -
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It is very challenging to make metallic glasses from melts as this process requires very high cooling rates (e.g. 105-106 K/s) and such a high cooling rate still results in a crystal percentage more than 0.1% in many cases. In general, only a material with a maximum allowed fraction of crystals, Xc, between 0.1% and 0.0001%, is conventionally classified as a glass. [1]





[1] Nascimento MLF, Souza LA, Ferreira EB, Zanotto ED. Journal of Non-Crystalline Solids 2005;351:3296.



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