Precipitations in a Dental Ag-Pd-Cu-Au Alloy
- 1 May 1982
- journal article
- Published by SAGE Publications in Journal of Dental Research
- Vol. 61 (5) , 673-677
- https://doi.org/10.1177/00220345820610051001
Abstract
The structure of a dental Ag-Pd-Cu-Au alloy has been studied after centrifugal casting and various heat treatments. By transmission electron microscopy, a high density of small fct particles, assumed to be PdCu, was observed, but, in addition, finely-spaced rods of ~ 0.05 μm (500 Å) diameter with an fcc structure precipitated on the {100} planes of the matrix were found. On the basis of their structure and the pertaining lattice parameter, these rods are assumed to be Cu-rich. They could also be observed by scanning electron microscopy, but not at annealing temperatures lower than 425° C.Keywords
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