The catalytic activity of copper, silver and gold foils, of a silver-lead (0.69 atom %) alloy foil and of several granular silver catalysts has been studied in the hydrogen-deuterium-exchange reaction. Observed activation energies and temperature ranges of activity of the catalysts have been measu...
J.Y. Kim and K.S. Weil: Development of a copper oxide - silver braze for ceramic joining, in Advances in Joining of Ceramics, edited by Charles A. Lewinsohn, Mrityunjay Singh, and Ronald Loehman (Ceramic Transaction 138, American Ceramic Society, Wes...
Stress corrosion cracking of copper and silver, specific effect of the metal cations Based on stress corrosion cracking (SCC) studies on brass, and on Ag–Cd alloys (a model alloy used to reproduce the behaviour of brass), it was found that... SB Farina,GS Duffó,JR Galvele - 《Corrosi...
During oxidative leaching of e-waste (i.e. waste of printed circuit boards) in H2SO4+H2O2/O2 solutions, in addition to copper, silver is also dissolved at certain levels. Precipitation of silver from synthetic sulphate leach solutions in the absence/presence of copper by addition of sodium ch...
The Fermi Surfaces of Copper, Silver and Gold I. The de Haas-van Alphen Effect Following the discovery of the effect in copper, silver and gold by the impulsive high-field method, a study of the variation of the oscillatory frequency (which is proportional to the extremal area of cross-sec...
In all cases, the copper recovery was at least twice that in the absence of silver ( 30%). High ferric concentrations have been tested in the absence and in the presence of silver. The presence of silver was essential to improve the copper extraction from chalcopyrite in acidic ferric ...
Adsorption of certain oxygen-, nitrogen-, and sulfur-containing molecules and ions on copper and silver electrodes The behavior of individual water, ethylenediamine, monoethanolamine, and thiourea molecules and of thiocyanate and cyanide ions on copper and silver electr... RR Nazmutdinov,AM Kuznetsov...
Contact metamorphism between granitic magma and sedimentary rocks, such as carbonate rocks and clastic rocks, occurred strongly in or near the contact area where skarn-type copper, tin and polymetallic ore bodies were formed in the same stage. Nevertheless silver, polymetallic ore bodies formed by ...
equilibrium between liquid (Ag,Cu) alloys and (Ag,Cu)2S-mattes has been proposed by [1924Gue, 1925Gue] which showed that, between 910 and 1040°C, copper has a strong tendency to migrate in the matte, whereas silver migrates in the metal, and gives tie lines between both liquid ...
However, DA also dissolved concentrations of copper and tin, changed solution pH, and grossly affected solution color, none of which occurred with CS. Significance: CS is most susceptible to tarnish discoloration in protein-free, sulfide-containing saliva under alternating wet and dry conditions. ...