“…Meanwhile according to the different works the melting temperatures for key compositions have dissimilar values such as Co 3 Sn 2 compound (∼1473 K [1] , ∼1443 K [2,3] , and ∼1453 K [4,5] ) as well as an eutectic point (∼1398 K [1] , ∼1385 K [2,3] , ∼1323 K [4] , and ∼1376 K [5] ). Moreover the composition of the eutectic point is also under discussion [6] . The mentioned above discrepancies in the data could be connected with experimental difficulties due to a high diffusion of the cobalt in tin [7] , meanwhile in [8] is mentioned the very small diffusion mobility of the Co atoms in the Co-based alloys.…”