MODEL-EQUATIONS FOR SOLID SOLUBILITIES IN BINARY NON-TRANSITION METAL-BASED ALLOYS

Both parabola and ellipse separating schemes are used to study the sol id solubilities for the binary alloy systems based on the 18 simple me tals. It has been found that the soluble elements can be separated fro m the insoluble ones by a parabola y(1)=a-bx(1)(2) or an ellipse (x(2) -m)(2)/c(2)+(y(2)-n)(2)/(d)2=1. The results show that the overall reli abilities of the solid solubilities for the 1242 binary alloys based o n the simple metals are 86.4 and 89% for the parabola and ellipse regu larities, respectively. The constants m, n, c and d in the ellipse equ ation are discussed, which can be related to some appropriate paramete rs for each host metal respectively.