Results 11 to 20 of about 11,568 (264)

Gold and Gold Alloy foams [PDF]

open access: yesGold Bulletin, 2008
The possibilities to manufacture gold-based foams are explored. Gold powder and various powdered alloying elements are mixed with a small volume fraction of a gas-releasing blowing agent. The blend is compacted to a dense precursor, which is then melted in a further step in order to trigger foam formation.
openaire   +2 more sources

Comparing Castability of Nickel-Chromium, Cobalt-Chromium, and Non-Precious Gold Color Alloys, Using two Different Casting Techniques

open access: yesJournal of Dentistry, 2022
Statement of the Problem: The castability of nonprecious gold color alloy using torch/ centrifugal and induction/vacuum-pressure casting techniques has not been studied yet. Purpose: This study was conducted to compare the castability of nickel chromium,
Elham Ansarifard   +4 more
doaj   +1 more source

Comparison of the adhesion of Streptococcus sanguinis to commonly used dental alloys stratified by gold content

open access: yesJournal of Dental Sciences, 2016
Background/purpose: Streptococcus sanguinis is an early colonizer of biofilm and plays a key role in the process of adhesion to prosthetic surfaces by facilitating the adhesion of later colonizers.
Hung Te Hung   +2 more
doaj   +1 more source

Electrochemical Characterization of a Commercial Au-Ag-Cu Alloy in an Acidic Medium

open access: yesInternational Journal of Electrochemical Science, 2016
The voltammograms obtained by the cyclic voltammetry method show potentials at which current waves occur successively corresponding to the number and the quantity of the phases present in the alloy, which can be used for characterisation of the ...
Vesna J. Grekulović   +2 more
doaj   +1 more source

A comparison of the traditional casting method and the galvanoforming technique in gold alloy prosthetic restorations

open access: yesCurrent Issues in Pharmacy and Medical Sciences, 2015
Gold is a dental material with very good mechanical properties. It is also aesthetic and biocompatible with the tissues of the oral cavity even at 100% purity.
Sarna-Boś Katarzyna   +5 more
doaj   +1 more source

Inca figurines from the Ethnologisches Museum in Berlin: an analytical study of some typical and atypical productions

open access: yesBulletin de l'Institut Français d'Études Andines, 2017
Fourteen hollow and one cast anthropomorphic and zoomorphic figurines produced in Incan times for ritual offerings from the Ethnologisches Museum in Berlin were selected to investigate the technologies and alloys used for their fabrication with portable ...
Maria Filomena Guerra   +3 more
doaj   +1 more source

Mechanical Spectroscopy Of Ordered Binary Au-Cu

open access: yesArchives of Metallurgy and Materials, 2015
We have studied a binary Au-Cu single crystal by mechanical spectroscopy. Upon very slow cooling from high temperatures, additional relaxation peaks arise at lower frequencies in isothermal spectra after the disappearing of the Zener peak below 665 K due
Tkalcec I., Mari D., Schaller R.
doaj   +1 more source

Evaluation and comparison of castability between an indigenous and imported Ni-Cr alloy

open access: yesIndian Journal of Dental Research, 2011
Context: Since 1907 casting restorations have been in use in dentistry. Numerous companies have been manufacturing and marketing base metal alloys. Gold was a major component of casting alloys.
Ganesh Ramesh   +3 more
doaj   +1 more source

MINERAL INCLUSIONS IN PLATINUM GRAINS FROM THE KAZAN PLACER (SOUTH URALS) [PDF]

open access: yesМинералогия, 2020
Platinum grains from the Kazan placer in the South Urals contain inclusions of native metals (gold, osmium group alloys), as well as PGE chalcogenides: sulfides (laurite, erlichmanite, bauite), sulfoarsenides (irarsite and hollingworthite ...
E.V. Zaykova   +2 more
doaj   +1 more source

Gold parting with nitric acid in gold-silver alloys

open access: yesSubstantia, 2019
This article is an overview of gold parting with nitric acid on a both industrial and laboratory scale, supported by more recently reported experimental and theoretical studies on the gold dealloying process for the fabrication of nanoporous gold ...
Iacopo Ciabatti
doaj   +1 more source

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