منابع مشابه
Copper and Nickel Alloys Clad with Platinum and Its Alloys JOINING TECHNIQUES AND MECHANICAL PROPERTIES
Technical and economic considerations have identified an opportunity for composite materials which combine certain advantageous features of both noble and base metals. During an investigation of some platinum cladding techniques and of the properties of the resulting bimetals, data have been amassed which could have relevance to industrial a s well as to decorative applications. Here the effect...
متن کاملCopper and Nickel Alloys Clad with Platinum and Its Alloys THE IMPORTANT INFLUENCE OF DIFFUSION
Cladding base metals with platinum or platinum alloys offers certain technical and economic advantages. In an earlier paper the mechanical properties of the metals to be joined were discussed. In this second paper it is shown that interdifi ion of the two materials being joined together must be considered, and that ifthe partners have different diffusion coefficients diffzculties can result dur...
متن کاملCharacterization of 14 Karat Gold Alloys
This paper is a continuation of the project we presented at the 2010 Santa Fe Symposium® in which we defined a characterization system and analysis of data on 18K gold alloys. The research carried out since then has enabled us to connect the physical-mechanical characteristics of each alloy with its chemical composition, thereby identifying the best solution possible to produce a specific item....
متن کاملTarnish Resistance, Corrosion and Stress Corrosion Cracking of Gold Alloys
Tarnishing, corrosion and stress corrosion cracking (SeC) of gold alloys are related phenomena. They present problems when they occur in gold jewellery, dental gold alloys and electronic devices. They are exploited, however, in the depletion gilding and finishing of gold jewellery; and in the extraction, refining and fire assaying of gold. There is still much that is not known about these pheno...
متن کاملEtching Techniques for Gold-Containing Ag3Sn Alloys and Amalgams*
Argon-ion etching and various other chemical etchants were applied to conventional and gold-containing dental alloys and amalgams. The polished and etched specimens were studied by optical and/or electron optical methods and by energy-dispersive x-ray spectroscopy. Chemical etchants, though effective, have the disadvantage of accentuating surface scratches. This, in turn, causes difficulty in t...
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ژورنال
عنوان ژورنال: Gold Bulletin
سال: 1976
ISSN: 0017-1557,2190-7579
DOI: 10.1007/bf03215397