Mass Transport in Solids and FluidsCambridge University Press, 2 lis 2000 The field of matter transport is central to understanding the processing of materials and their subsequent mechanical properties. While thermodynamics determines the final state of a material system, it is the kinetics of mass transport that governs how it gets there. This book, first published in 2000, gives a solid grounding in the principles of matter transport and their application to a range of engineering problems. The author develops a unified treatment of mass transport applicable to both solids and liquids. Traditionally matter transport in fluids is considered as an extension of heat transfer and can appear to have little relationship to diffusion in solids. This unified approach clearly makes the connection between these important fields. This book is aimed at advanced undergraduate and beginning graduate students of materials science and engineering and related disciplines. It contains numerous worked examples and unsolved problems. The material can be covered in a one semester course. |
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... developed byhimin 1855.Fick surmised,onthebasisof experiment andintuition,thatdiffusion occursinsolidsin response to aconcentration gradient. Theprocesswasthoughttobe analogoustothatofheat transfer whichhad been analyzedby Fourier some ...
... developed byhimin 1855.Fick surmised,onthebasisof experiment andintuition,thatdiffusion occursinsolidsin response to aconcentration gradient. Theprocesswasthoughttobe analogoustothatofheat transfer whichhad been analyzedby Fourier some ...
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... develop some physical picture of the process involvedattheoutset. Wewilldiscuss thishereonlyin general terms.We want merelyto develop a conceptual pictureof asolid, liquid or gas andthe way in which atoms areable tomove around ...
... develop some physical picture of the process involvedattheoutset. Wewilldiscuss thishereonlyin general terms.We want merelyto develop a conceptual pictureof asolid, liquid or gas andthe way in which atoms areable tomove around ...
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... developed by Fick also has a sound basis in theory. Figure 1.3 When small atoms enter a crystal, they occupy positions between the lattice atoms, called interstitial sites. The free energy of an atom depends on its position. The points ...
... developed by Fick also has a sound basis in theory. Figure 1.3 When small atoms enter a crystal, they occupy positions between the lattice atoms, called interstitial sites. The free energy of an atom depends on its position. The points ...
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... developed by Einstein.7 It considers diffusing molecules as hard spheres moving through a viscous continuum according to Stokes law. The result is that (1.18) whereris themolecular (i.e. hardsphere)radius. Combining thiswith eq. (1.16) ...
... developed by Einstein.7 It considers diffusing molecules as hard spheres moving through a viscous continuum according to Stokes law. The result is that (1.18) whereris themolecular (i.e. hardsphere)radius. Combining thiswith eq. (1.16) ...
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Spis treści
Steadystate diffusion 2 1 Ficks FirstLaw 2 2 Applications to steadystate problems | |
Transient diffusion problems | |
concentration Cs 3 6 2 Uniform initial | |
materials engineering | |
Applications involving | |
Heat treatmentofbinary alloys | |
Diffusion in concentrated alloysand fluids | |
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activation energy alloy annealed assume assumptions Atomic Percent boundary conditions calculate carbon cementite composition concentration gradient concentration profile consider convection copper crosssectional cylinder density determine developed diameter diffusion coefficient diffusion couple diffusion distance diffusion problems diffusive flux dissolved equal equalto equation equilibrium constant error function eutectoid evaporation example Fick’s First Law Fick’s Second Law Figure film fixed flow fluid fraction free energy geometry given grain boundary growth heat hydrogen initial conditions interdiffusion interstitial inthe involving kinetics lattice layer liquid mass transfer coefficient masstransfer material metal molar molar volume molten nickel nitrogen occurs ofthe oxidation oxygen parameter particles pearlite phase diagram plate precipitate pressure radioactive reaction result schematic illustration solid solubility solute concentration species sphere spherical steel substitute Suppose surface concentration temperature thatthe thediffusion thickness tothe vapour velocity vessel volume wecan Weight Percent zero