Non-linear growth of the ApBq layer

Note that a certain portion of the x - t curve, where the condition klBl x R is satisfied, is close to the parabola x = 2 kimt. 

Similar considerations clearly apply to the ArBs layer if the regime of its growth is diffusion controlled with regard to component A, so that 

Effect of the critical thickness of the ApBq layer with regard to components on the process of growth of the ArBs layer With further thickening the ApBq layer its growth regime becomes diffusion controlled (in the theoretical definition) not only with regard to component 

B but also with regard to component A (x x B2 and x x[f2 ). This case 

It is surprising why this obvious conclusion remained overlooked until 

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