For a solid solution consisting of two elements (designated as 1 and 2), sometimes it is desirable to determine the number of atoms per cubic centimeter of one element in a solid solution, N₁, given the concentration of that element specified in weight percent, C₁. This computation is possible using the following expression:

where

N_A = Avogadro’s number

ρ₁ and ρ₂ = densities of the two elements

A₁ = the atomic weight of element 1

Derive Equation 4.18 using Equation 4.2 and expressions contained in Section 4.4.

Transcribed Image Text:

(4.18) NĄCI N1 41 (100 - C1) C141 P2 P1