Sentence examples for boundary diffusion control and from inspiring English sources
A new relationship for coarsening kinetics is presented to properly reflect the combined effects of matrix and grain boundary diffusion control and is correlated with the experimental data.
The transition from strengthening to softening is explained in terms of generation and grain boundary diffusion controlled annihilation of lattice dislocations at grain boundaries.
It was indicated that creep and densification during sintering of alumina under a small uniaxial load were both grain boundary diffusion controlled kinetic processes.
The flow softening is related to dynamic recrystallization developed under the dislocation climb controlled creep; the flow hardening is related to grain growth that occurs under the grain boundary diffusion controlled creep.
The appreciable discrepancy at 1100 °C is attributed to the fact that the sintering is performed at a temperature near the boundary line dividing grain-boundary-diffusion controlling field and surface-diffusion controlling field, which lead to a significant contribution of neck growth from grain-boundary diffusion.
In contrast to what was established in the past, it is shown that densification is controlled by grain boundary diffusion and grain growth is controlled by the grain boundaries.
We consider the peritectoid reaction α+β→ω as it occurs at previously existing planar α/β interfaces, and at sufficiently low temperatures that volume diffusion is negligible and interphase boundary diffusion is rate-controlling.
We consider the solid state reactions α+β→ω and ω→α+β at sufficiently low temperatures so that volume diffusion is negligible and interphase boundary diffusion is rate controlling.
It was concluded that the growth mechanism of Cu2(In,Sn) is temperature dependent, which is volume-diffusion-controlled at 60 °C 80 °C, whereas grain boundary diffusion becomes rate-controlling at 100 °C.
The change in densification behaviour is suggested to be related to the transition with increasing temperature from grain boundary diffusion to lattice diffusion controlled densification.
The results are explained in terms of competition between grain boundary diffusion and grain boundary migration.
