The phenomenon of bifurcation in the processes of oxidative construction of thin-wall ceramics under heating of solid titanium preforms

Abstract

On the basis of experimental data, we calculate the diffusion coefficients of titanium and oxygen through rutile, which is synthesized in the process of oxidative construction of thin-wall ceramics (OCTWC), and titanium through a K-layer (a solid solution of oxygen in the metal). It is shown that, at the beginning of the exponential stage, the process rate is determined by the rate of titanium diffusion through the K-layer. Near the bifurcation point, the diffusion conductivities of the OCTWC rutile and K-layer become equal, which leads to a stepwise variation in the process rate.