Presentation is loading. Please wait.

Presentation is loading. Please wait.

Random motion of atoms “Laws” of diffusion

Published byΛώτ Αλεβιζόπουλος Modified over 6 years ago

Similar presentations

Presentation on theme: "Random motion of atoms “Laws” of diffusion"— Presentation transcript:

1 Random motion of atoms “Laws” of diffusion Solutions to diffusion equations How do atoms move in a solid? Diffusion coefficient

2 Random motion J. Gaines and T. J. Lyons University of Oxford

3

4

5 J. Gaines and T. J. Lyons University of Oxford

6

7

8

9

10 Random motion of atoms “Laws” of diffusion Solutions to diffusion equations How do atoms move in a solid? Diffusion coefficient

11

12

13

14 mechanism of diffusion

15 Self diffusion Prof. H. Föll Christian-Albrechts-University of Kiel

16 Interstitial diffusion
Prof. H. Föll Christian-Albrechts-University of Kiel

17 Diffusion Coefficient

18

19

20

21

22

23

24

25

26

Download ppt "Random motion of atoms “Laws” of diffusion"

Similar presentations

Lecture on DIFFUSION IN SOLIDS. Applications of Diffusion in Solids

Lecture on DIFFUSION IN SOLIDS. Applications of Diffusion in Solids
Kinetics III Lecture 16. Derivation of 5.67 Begin with Assume ∆G/RT is small so that e ∆G/RT = 1+∆G/RT, then Near equilibrium for constant ∆H, ∆S, ∆G.

Kinetics III Lecture 16. Derivation of 5.67 Begin with Assume ∆G/RT is small so that e ∆G/RT = 1+∆G/RT, then Near equilibrium for constant ∆H, ∆S, ∆G.
Chapter 6 - 1 ISSUES TO ADDRESS... How does diffusion occur? Why is it an important part of processing? How can the rate of diffusion be predicted for.

Chapter ISSUES TO ADDRESS... How does diffusion occur? Why is it an important part of processing? How can the rate of diffusion be predicted for.
Chapter 5 - 1 ISSUES TO ADDRESS... How does diffusion occur? Why is it an important part of processing? How can the rate of diffusion be predicted for.

Chapter ISSUES TO ADDRESS... How does diffusion occur? Why is it an important part of processing? How can the rate of diffusion be predicted for.
Steps to balance equations: 1) Start with the most complex compound/formula unit in the equation 2) Move element by element through that compound and make.

Steps to balance equations: 1) Start with the most complex compound/formula unit in the equation 2) Move element by element through that compound and make.
Chapter 5 - 1 ISSUES TO ADDRESS... How does diffusion occur? Why is it an important part of processing? How can the rate of diffusion be predicted for.

Chapter ISSUES TO ADDRESS... How does diffusion occur? Why is it an important part of processing? How can the rate of diffusion be predicted for.
Balancing Redox Reactions with Oxidation Numbers (see p 462) 1.Assign oxidation number 2.Identify oxidation and reduction 3.Determine the # of e- lost.

Balancing Redox Reactions with Oxidation Numbers (see p 462) 1.Assign oxidation number 2.Identify oxidation and reduction 3.Determine the # of e- lost.
5.3 – Advective-Dispersion Equation (ADE) Approach: Conservation of mass in a control volume (just like Richard’s Eqn) Mechanisms: convection, diffusion,

5.3 – Advective-Dispersion Equation (ADE) Approach: Conservation of mass in a control volume (just like Richard’s Eqn) Mechanisms: convection, diffusion,
Slides where produced by Prof. Lance Cooper at University of Illinois.

Slides where produced by Prof. Lance Cooper at University of Illinois.
Technical Question Technical Question

Technical Question Technical Question
Dr. Nasim Zafar Electronics 1 EEE 231 – BS Electrical Engineering Fall Semester – 2012 COMSATS Institute of Information Technology Virtual campus Islamabad.

Dr. Nasim Zafar Electronics 1 EEE 231 – BS Electrical Engineering Fall Semester – 2012 COMSATS Institute of Information Technology Virtual campus Islamabad.
Using Inverse Matrices Solving Systems. You can use the inverse of the coefficient matrix to find the solution. 3x + 2y = 7 4x - 5y = 11 Solve the system.

Using Inverse Matrices Solving Systems. You can use the inverse of the coefficient matrix to find the solution. 3x + 2y = 7 4x - 5y = 11 Solve the system.
Coordinate Graphing System of Linear Inequalities.

Coordinate Graphing System of Linear Inequalities.
THERMODYNAMIC MODELLING OF INTERDIFFUSION IN Fe-Co AND Fe-Ni BONDS Matej Pašák.

THERMODYNAMIC MODELLING OF INTERDIFFUSION IN Fe-Co AND Fe-Ni BONDS Matej Pašák.
Balancing Chemical Equations. Why do we need to Balance Chemical Equations? The Law of Conservation of Mass The # of atoms must stay the same on both.

Balancing Chemical Equations. Why do we need to Balance Chemical Equations? The Law of Conservation of Mass The # of atoms must stay the same on both.
Qixiu Li Prof. Derek Elsworth EGEE 520 04-29-2008.

Qixiu Li Prof. Derek Elsworth EGEE
Gases Diffusion and Effusion.  Objectives  Describe the process of diffusion  State Graham’s law of effusion  State the relationship between the average.

Gases Diffusion and Effusion.  Objectives  Describe the process of diffusion  State Graham’s law of effusion  State the relationship between the average.
Introduction Material transport by atomic motion Diffusion couple:

Introduction Material transport by atomic motion Diffusion couple:
Byeong-Joo Lee Byeong-Joo Lee POSTECH - MSE Diffusion.

Byeong-Joo Lee Byeong-Joo Lee POSTECH - MSE Diffusion.
CHAPTER 5 Diffusion 5-1. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display Atomic Diffusion in Solids Diffusion.

CHAPTER 5 Diffusion 5-1. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display Atomic Diffusion in Solids Diffusion.

Similar presentations

Ads by Google