Mechanism of Tarnishing of Precious-Metal Contact Alloys
β Scribed by Abbott, W.
- Book ID
- 119820582
- Publisher
- IEEE
- Year
- 1969
- Tongue
- English
- Weight
- 701 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0018-9502
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Electron spectroscopic studies of Au-Ag-Cu alloys of the type used for dental castings show that small additions ( s 3 wt%) of palladium reduce essentially the thickness of the sulfide layer formed on surfaces of samples treated in aqueous Na2S solutions. Relative to silver, palladium does not enric
## Abstract The tarnishing resistance of two AuAg binary, one AuCu binary, three AuAgCu ternary and one AuAgCuZn quaternary alloys was investigated using two accelerated tarnish testing procedures. The flower of sulphur test carried out in the gaseous phase and the TuccilloβNielsen method performed