Chapter 5_Part_1

Chapter 5_Part_1 - Chapter Outline Diffusion - how do atoms...

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1 MSE 2090: Introduction to Materials Science Chapter 5, Diffusion Diffusion - how do atoms move through solids? ± Diffusion mechanisms ¾ Vacancy diffusion ¾ Interstitial diffusion ¾ Impurities ± The mathematics of diffusion ¾ Steady-state diffusion (Fick’s first law) ¾ Nonsteady-State Diffusion (Fick’s second law) ± Factors that influence diffusion ¾ Diffusing species ¾ Host solid ¾ Temperature ¾ Microstructure Chapter Outline
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2 MSE 2090: Introduction to Materials Science Chapter 5, Diffusion Diffusion is material transport by atomic motion . Inhomogeneous materials can become homogeneous by diffusion. For an active diffusion to occur, the temperature should be high enough to overcome energy barriers to atomic motion. What is diffusion? results of an atomistic simulation of atomic mixing homework project in MSE 4592/6270
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3 MSE 2090: Introduction to Materials Science Chapter 5, Diffusion Interdiffusion (or impurity diffusion) occurs in response to a concentration gradient
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This note was uploaded on 02/14/2012 for the course MSE 2090 taught by Professor Leoindzhiglei during the Fall '10 term at UVA.

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Chapter 5_Part_1 - Chapter Outline Diffusion - how do atoms...

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