Precipitation reaction in alpha-Cu-Al-Ag alloys
The Ag-rich precipitates formation reaction in the Cu-9.22%at. Al-4.66%at. Ag, Cu-9.31%at. Al-5.83%at. Ag and Cu-9.37%at. Al-7.08%at. Ag alloys was studied using microhardness change measurements with temperature and time, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The results indicated that the Ag-rich phase formation is an interface controlled process with a zero-order mechanism, due to the amount of unsolved Ag that makes the precipitation reaction rate independent of Ag concentration.
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| Main Authors: | , , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
2011
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762011000300002 |
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