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→Silver Alloys
To improve the physical and contact properties of fine silver melt-metallurgical produced silver alloys are used ''(Table 2.13)''. By adding metal components the mechanical properties such as hardness and tensile strength as well as typical contact properties such as erosion resistance, and resistance against material transfer in DC circuits are increased ''(Table 2.14)''. On the other hand however, other properties such as electrical conductivity and chemical corrosion resistance can be negatively impacted by alloying ''(Figs. 2.47 and 2.48)''.
<xr id="fig:fig2.47"/> Fig. 2.47: Influence of 1-10 atom% of different alloying metals on the electrical resistivity of silver <xr id="fig:fig2.48"/> Fig. 2.48: Electrical resistivity p of AgCu alloys <div class="multiple-images"> <figure id="fig:fig2.47">[[File:Influence of 1 10 atom of different alloying metals.jpg|rightleft|thumb|<caption>Influence of 1-10 atom% of different alloying metals on the electrical resistivity of silver</caption>]]Fig. 2</figure> <figure id="fig:fig2.48:">[[File:Electrical resistivity p of AgCu alloys.jpg|rightleft|thumb|<caption>Electrical resistivity p of AgCu alloys with 0-20 weight% Cu in the soft annealed and tempered stage a) Annealed and quenched b) Tempered at 280°C</caption>]]</figure></div><div class="clear"></div>
====Fine-Grain Silver====
Fine-Grain Silver (ARGODUR-Spezial) is defined as a silver alloy with an addition of 0.15 wt% of Nickel. Silver and nickel are not soluble in each other in solid form. In liquid silver only a small amount of nickel is soluble as the phase diagram ''(Fig. 2.51)'' illustrates. During solidification of the melt this nickel addition gets finely dispersed in the silver matrix and eliminates the pronounce coarse grain growth after prolonged influence of elevated temperatures ''(Figs. 2.49 and 2.50)''.
