Titlebook: Kinetics of Metallurgical Processes; Hem Shanker Ray,Saradindukumar Ray Textbook 2018 Springer Nature Singapore Pte Ltd. 2018 Metallurgy.m

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Diffusion Through Product Layer,fect. In case the porosity is low or non-existent, then the reagent has to diffuse through the protective film (by pore diffusion and lattice diffusion, respectively) before it reaches the interface. In this case, the reaction rate is likely to decrease progressively because of the gradual thickening of the product layer.