Results 21 to 30 of about 14,851 (306)
Mechanical Spectroscopy Of Ordered Binary Au-Cu
Archives 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
New gold and silver-gold catalysts in the shape of sponges and sieves
, 2022 S.142-149Gold with a nanoporous sponge-like morphology, generated by leaching of AuAg alloys is presented as a new unsupported material system for catalytic applications.
Kübel, C. +8 more
core +1 more source
Bulletin 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
Evaluation and comparison of castability between an indigenous and imported Ni-Cr alloy
Indian 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
The use of gold and gold alloys in prosthetic dentistry – a literature review
Current Issues in Pharmacy and Medical Sciences, 2015 Gold is a noble metal with very good chemical resistance. It also does not become oxidized in water or air. Pure gold has a bright yellow color and shine, and it is a heavy, but soft metal with huge plasticity and ductility.
Oleszek-Listopad Justyna +5 more
doaj +1 more source
Gold parting with nitric acid in gold-silver alloys
Substantia, 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
MINERAL INCLUSIONS IN PLATINUM GRAINS FROM THE KAZAN PLACER (SOUTH URALS) [PDF]
Минералогия, 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
Frontiers in Chemistry, 2019 Palladium nanoparticles (Pd-NPs) with controlled distributions of sizes and shapes (nanospheres–Pd-NS-, nanocubes -Pd-NC-, and nanooctahedrons -Pd-NO-) are synthesized by wet chemistry methods and characterized by TEM/HRTEM.
Thibault Rafaïdeen +2 more
doaj +1 more source
, 2022 S.251-256The 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
Banhart, J.
core
Comportement anodique d’alliages or-cuivre en solution aqueuse de NaCl
CHIMIA, 1973 The anodical behaviors of 50% Cu-Au alloys, having an ordered or disordered structure, were studied in aqueous solutions of chloride by means of different electrochemical methods.
P. Tissot, H. Lüthy, R. Monnier
doaj +1 more source