Measurements were made of the influence of W upon the diffusion rate of C in face-centered Fe at 1000C (table 204). The W slowed the diffusion of C. These results were compared with previous measurements of Fe-Co alloys and other known data. No connection seemed to exist between the variation in lattice parameter of face-centered cubic Fe and the variation in the diffusion rate of C.

R.Smoluchowski: Physical Review, 1943, 63[11-12], 438–40