High-resolution electron microscopic study of age-hardening in a commercial dental gold alloy.
High-resolution electron microscopy and electron diffraction were applied to elucidate the hardening mechanism in an 18-carat gold commercial dental alloy, Au-31.7 at.%,Cu-8.1 at.%,Pd-5.3 at.%,Ag-54.9 at.%. The interface between the AuCu-I ordered platelets and the surrounding Au3Cu ordered phase was analyzed down to the atomic scale. A geometric model for the interface was deduced directly from the high-resolution electron micrographs. No evidence was found for the presence of a FCC phase at the interface between AuCu-I and Au3Cu.
Yasuda
K
K
Van Tendeloo
G
G
Van Landuyt
J
J
Amelinckx
S
S
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003300:Copper; D003461:Crystallography; D006046:Gold; D006047:Gold Alloys; D006244:Hardness; D008854:Microscopy, Electron; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors
D006047:Gold Alloys; D006046:Gold; D003300:Copper