Interdiffusion between Ti and Mo was investigated at temperatures ranging from 1250 to 1800C. A Kirkendall effect was detected. The interdiffusion coefficients which were evaluated by using the Den Broeder method were strongly dependent upon the composition. The Hall method was used to determine diffusion coefficients at the concentration limits. These coefficients were compared with published impurity diffusion coefficients for the pure metals, and with coefficients that were calculated by using the Vignes-Birchenhall relation. This binary system did not exhibit any anomalous behavior. The interdiffusion coefficient at the Kirkendall interface was also calculated by using the Heumann method.

Interdiffusion in the ß Mo-Ti Solid Solution at High Temperatures. I.Thibon, D.Ansel, M.Boliveau, J.Debuigne: Zeitschrift für Metallkunde, 1998, 89[3], 187-91