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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... we can always write an equation of this sort but it is not very useful unless D B is independent of position y, or least approximately so. This really means that D B should be independent of the solute concentration. As we will see ...
... we can always write an equation of this sort but it is not very useful unless D B is independent of position y, or least approximately so. This really means that D B should be independent of the solute concentration. As we will see ...
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... we can write the ratio of diffusion rates at the two temperatures as Bysubstitution into this equation we find that theratiois which is equal to 2.84. In other words the small activation energy found in liquids leads to a much ...
... we can write the ratio of diffusion rates at the two temperatures as Bysubstitution into this equation we find that theratiois which is equal to 2.84. In other words the small activation energy found in liquids leads to a much ...
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... We can determine the temperature dependence of the diffusion coefficient more precisely by separatingthefreeenergyintotwo terms for the enthalpy and entropy, such that Bysubstituting this into eq. (1.8) we get (1.9) Hereallof ...
... We can determine the temperature dependence of the diffusion coefficient more precisely by separatingthefreeenergyintotwo terms for the enthalpy and entropy, such that Bysubstituting this into eq. (1.8) we get (1.9) Hereallof ...
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... We can determinethenet flux due to a concentration gradient ina similar manner to the approach weusedforsolids. However, we nowconsider two parallel planes separated bya distance λ, atsayz=z 0 and z =z flowrate per unit area for gas ...
... We can determinethenet flux due to a concentration gradient ina similar manner to the approach weusedforsolids. However, we nowconsider two parallel planes separated bya distance λ, atsayz=z 0 and z =z flowrate per unit area for gas ...
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David S. Wilkinson. (1.25) For an ideal gas we can express the concentration as a pressure, C = p/kT. We can therefore rewrite the diffusion coefficient as (1.26) Example 1.4: Diffusion coefficient for oxygen in air Use eq. (1.26) to ...
David S. Wilkinson. (1.25) For an ideal gas we can express the concentration as a pressure, C = p/kT. We can therefore rewrite the diffusion coefficient as (1.26) Example 1.4: Diffusion coefficient for oxygen in air Use eq. (1.26) to ...
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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