Changes

Fine-Grain silver 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 illustrates (<xr id="fig:Phase diagram of silver nickel"/><!--(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 (<xr id="fig:Coarse grain micro structure of Ag"/><!--(Fig. 2.49)--> and <xr id="fig:Fine grain microstructure of AgNiO"/><!--(Fig. 2.50)-->).