抄録
The chemical diffusion in titanium-molybdenum system has been studied in the temperature range of 1200 to 1500 K using pure metal diffusion couples. The concentration penetration profiles have been established by employing an electron probe microanalyser. The chemical diffusion coefficients have been evaluated following the Boltzmann-Matano method. The concentration and temperature dependence of chemical diffusion coefficients have been established. The expression for the chemical diffusion coefficient for a given composition (CTi) and temperature (T) can be written as
\ ildeD(CTi)=2.75×10−5exp(−4.14CTi)exp[−(212.647+68.16CTi)kJ·mol−1⁄RT], m2·s−1.
The data have been rationalised on the basis of the Vignes-Birchenall relationship.
