The present topical volume presents a representative cross-section of some recent advances made in the area of diffusion. The range of topics covered is very large, and, this reflects the enormous breadth of the topic of diffusion. The areas covered include diffusion in intermetallics, phenomenological diffusion theory, diffusional creep, kinetics of steel-making, diffusion in thin films, precipitation, diffusional phase transformations, atomistic diffusion simulations, epitaxial growth and diffusion in porous media.Review from Book News Inc.: In 13 invited and peer-reviewed papers, scientists in metallurgy, materials, chemistry, and physics summarize some recent research into how material diffusion at the atomic, microscopic, and even macroscopic scale can influence the characteristics and behavior of bulk materials. Their topics include analytical solutions of the Boltzmann transformation equation, the reactive diffusion at the contact of a solid phase with the solder melt, the coke and iron ore materials kinetic characteristics and quantitative indicators of the blast furnace process, original methods for diffusion measurements in polycrystalline thin films, and heat and mass transfer at high speed filtration in porous media and packed beds.