Journal article · Preprint article
Finite size melting of spherical solid-liquid aluminium interfaces
Nagoya University1
Metal Structures in Four Dimensions, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
We have investigated the melting of nano-sized cone shaped aluminium needles coated with amorphous carbon using transmission electron microscopy. The interface between solid and liquid aluminium was found to have spherical topology. For needles with fixed apex angle, the depressed melting temperature of this spherical interface, with radius R, was found to scale linearly with the inverse radius 1/R.
However, by varying the apex angle of the needles we show that the proportionality constant between the depressed melting temperature and the inverse radius changes significantly. This led us to the conclusion that the depressed melting temperature is not controlled solely by the inverse radius 1/R.
Instead, we found a direct relation between the depressed melting temperature and the ratio between the solid-liquid interface area and the molten volume.
| Language: | English |
|---|---|
| Publisher: | Informa UK Limited |
| Year: | 2009 |
| Pages: | 595-604 |
| ISSN: | 14786443 and 14786435 |
| Types: | Journal article and Preprint article |
| DOI: | 10.1080/14786430902720952 |
Materialeforskning Materialekarakterisering og materialemodellering Materials characterization and modelling Materials research
