100 for the three components are plotted on the respective three axes of the triangle decreasing concentrations of nickel from 100 atomic of ni on the right to 0 atomic of ni on the left are plotted on the horizontal axis decreasing concentrations of bismuth from 100 atomic of bi at the bottom to 0 atomic of bi at the top are plotted on the left hand axis which slopes up and to the right decreasing concentrations of copper from 100 atomic of cu at the top to 0 atomic of cu at the bottom are plotted on the right hand axis which slopes down and to the left temperature lines are visible within the three axes in this case there is no solidus line as in fig3 and therefore continuous temperature curves are plotted an interrupted curve which characterizes various transition states between the pure crystals the intermetallic phases which occur and the melt is illustrated in a bottom left hand corner area of the diagram finally fig7 illustrates a further binary phase diagram for silver and bismuth corresponding to that shown in fig2 but in this case preferred alloy compositions a3 b3 c3 and d3 in accordance with the following table are also included in the drawing alloy a3 bi51 ag44 ni5 contains approximately 68 by weight u00b1 2 by weight of bismuth approximately 30 by weight u00b1 2 by weight of silver and approximately 2 by weight u00b1 1 by weight of nickel alloy b3 bi63 ag31 ni6 contains approximately 78.