Alloys ternary amalgam

Some of these binary and ternary phases have been studied to a larger extent because of special physical and/or mechanical properties. Of particular interest are the Cu phases CuZn, Cu j +1, 3,Zn i 2.3,Al, and (Cu,Ni)3Al, on which the Cu-Zn-Al and Cu-Al-Ni shape memory alloys are based and which are the subject of the following sections. In addition, the Cu-Au phases CU3AU and CuAu and the Cu-Sn phases Cu3Sn and Cu Snj will be addressed, which are important constituents of Cu-Au alloys and amalgams for dental restorative applications. 

Na-K alloys are used in heat-exchange systems. Ternary alloy 10.1 at.% Na, 47.4 at.% K and 42.5 at.% Cs (L (Cs) + (K) + (CsNa2, KNa2)) probably has the lowest known melting point (—76°C) of all the metallic systems. Sodium amalgams, owing to their reducing properties, can be used in chemical synthesis processes. 

Alloy formation is of great technological importance. Indeed, the Bronze Age, Iron Age, and other epochal historical transformations are characteristically identified with metallurgical advances in alloying. Well-known binary or ternary alloys that underlie aspects of modem life include bronze (Cu/Sn), brass (Cu/Zn), stainless steel (Fe/Ni/Cr), coinage and jewelry metals (Au/Ni, Ag/Cu), amalgams (Hg/Ag/Cu), and aluminum can material (Al/Mn), among many others. 

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