| Autor: |
A.A. Babareko, V.V. Savytchev, I.N. Belokurova, V.S. Zemskov, N.F. Bogdanova |
| Rok vydání: |
1982 |
| Předmět: |
|
| Zdroj: |
Journal of Crystal Growth. 60:86-90 |
| ISSN: |
0022-0248 |
| DOI: |
10.1016/0022-0248(82)90175-0 |
| Popis: |
The external and internal structures of copper and silver samples have been studied, which were obtained by containerless solidification in microgravity experiments of short duration. The investigation of the structures by light and electron microscopy, as well as by X-ray methods, allowed us to reveal a texture of single-crystal type and a clearly pronounced dendritic structure. In copper samples, pores have been found whose occurrence could be due to the formation of shrinkage cavities or to the evolution of gases which the starting samples contained. Lack of contact with container walls and lack of convection have caused the solidification to occur under the conditions of high supercooling with the formation of a few dendrites (from 1 to 3). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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