This study was performed to obersered the compositions of oxide on the surface of dental porcelain gold alloy with various Tin and Copper addtions according to the degassing and analysing the change composition of additional elements Sn, Cu on diffusi...
This study was performed to obersered the compositions of oxide on the surface of dental porcelain gold alloy with various Tin and Copper addtions according to the degassing and analysing the change composition of additional elements Sn, Cu on diffusion behaviors of porcelain-metal surfaces.
To investigate the micrstructure of oxidized alloy surface, EDAX and EPMA were used to investigate the diffusion behaviors of porcelain-metal surfaces.
X-ray diffraction were used to observe the morphological changes in the oxidation zone.
Te results of this study were obtained as follows:
1) The Tin oxidation increased with increasing Tin contents after heat treatment. Diffusion of Tin element increased with increasing tin contents in metal-porcelain sulface after heat treatment.
2) The Copper oxidation and diffusion not increased with increasing cpooer contents.
3) The oxidations of alloy surface were mainly SnO_(2) and CuO.