Abstract
As a result of the diffusion experiment in the temperature range from 1200°C to 1400°C, it was recognized that the interdiffusion coefficients, D determined by Boltzman-Matano method, decreased monotonously with increasing Mo content, while the activation energies for interdiffusion increased monotonously with Mo content. On the other hand, from the intrinsic diffusion coefficients, DTi and DMo determined at 12.8±0.3at%Mo concentration by Darken's relation, it was shown that the diffusion velocity of Ti atoms was about four times as fast as that of Mo atoms, and this difference was confirmed to be one of the most important factors for the expanding phenomenon whose maximum was observed at 50 wt%Mo in the β region during sintering process for the Ti-Mo binary mixed powder compacts. (Received October 22, 1981)
