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Diffusion in Solids

By Prof. Mayur Vaidya   |   IIT Hyderabad
Learners enrolled: 146   |  Exam registration: 1
ABOUT THE COURSE:
This course introduces the fundamental concepts of diffusion in solids to the students of materials science and metallurgical engineering. Diffusion is a key phenomenon controlling several thermally activated processes in materials. The course offers unique blend of in-depth fundamental diffusion concepts applied to several class of materials such as metallic alloys, semiconductors, ionic solids and nanocrystalline systems. The students will learn to solve diffusion equations following a continuum approach as well as gain understanding of atomic mechanisms of diffusion. The course will also include a DICTRA module where students will learn basics of computational tools for diffusion and get a hands on experience on the same. Techniques to measure the diffusion coefficients are also a part of the course.

INTENDED AUDIENCE: Undergraduate students and First year PG students

INDUSTRY SUPPORT: Tata Steel, JSW, General Electric, Eaton, Kennametal India, TCS Engineering, Hindalco, MIDHANI, Sandvik. In general, all Materials and Manufacturing Industries that engage in materials processing and design, and the government labs like DMRL, ISRO, BARC, IGCAR
Summary
Course Status : Upcoming
Course Type : Core
Language for course content : English
Duration : 12 weeks
Category :
  • Metallurgy and Material science & Mining Engineering
  • Materials Joining
  • Minor in Materials Science
Credit Points : 3
Level : Undergraduate/Postgraduate
Start Date : 20 Jan 2025
End Date : 11 Apr 2025
Enrollment Ends : 27 Jan 2025
Exam Registration Ends : 14 Feb 2025
Exam Date : 04 May 2025 IST

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.


Page Visits



Course layout

Week 1:
Lec 0 - Introduction
Lec 1 - Diffusion in materials world
Lec 2 - Revisiting relevant mathematical concepts
Lec 3 - Fick's laws of diffusion
Lec 4 - Introduction to Laplace transform
Lec 5 - Tutorial 1
Week 2:
Lec 6 - Laplace transformation of Fick's second law
Lec 7 - Solutions to Diffusion equations - 1
Lec 8 - Solutions to Diffusion equations - 2
Lec 9 - Solutions to Diffusion equations - 3
Lec 10 - Tutorial-2
Week 3: 
Lec 11 - Demo of Scilab: Plotting the diffusion profile
Lec 12 - Revisiting structure and defects in crystalline solids - 1
Lec 13 - Revisiting structure and defects in crystalline solids - 2
Lec 14 - Random walk and atomic jumps
Lec 15 - Tutorial 3
Week 4:
Lec 16 - Atomic mechanisms of diffusion
Lec 17 - Correlation factors - 1
Lec 18 - Correlation factors - 2
Lec 19 - Temperature and pressure dependence of diffusion
Lec 20 - Tutorial -4
Week 5:
Lec 21 - Revisiting G-X curves and phase diagrams
Lec 22 - Basics of Interdiffusion
Lec 23 - Phase formation in interdiffusion zone
Lec 24 - Concentration profiles in interdiffusion zone - 1
Lec 25 -Tutorial -5
Week 6:
Lec 26 - Concentration profiles in interdiffusion zone - 2
Lec 27 - Boltzmann-Matano Method
Lec 28 - Kirkendall Effect
Lec 29 - Intrinsic diffusion and darkens equations
Lec 30 - Tutorial-6
Week 7:
Lec 31 - Introduction to CALPHAD
Lec 32 - Introduction to Thermocalc and DICTRA
Lec 33 - Thermodynamic and kinetic databases
Lec 34 - Homogenization, moving boundary problems
Lec 35 - Tutorial -7
Week 8:
Lec 36 - Radiotracer diffusion
Lec 37 - SIMS and EPMA
Lec 38 - Mechanical spectroscopy & Electrical Methods
Lec 39 - Nuclear methods - 1
Lec 40 - Tutorial - 8
Week 9:
Lec 41 - Nuclear Methods - 2
Lec 42 - Grain boundary structure and fisher model
Lec 43 - Kinetic regime of grain boundary diffusion
Lec 44 - Dislocation pipe diffusion
Lec 45 - Tutorial 9
Week 10:
Lec 46 - Diffusion in nanocrystalline materials
Lec 47 - Diffusion in Intermetallics
Lec 48 - Diffusion in quasicrystalline alloys
Lec 49 - Diffusion in metallic alloys -1
Lec 50 - Tutorial 10
Week 11:
Lec 51 - Diffusion in metallic alloys-2
Lec 52 - Diffusion in high entropy alloys
Lec 53 - Diffusion in semiconductors-1
Lec 54 - Diffusion in semiconductors-2
Lec 55 - Tutorial 11
Week 12: 
Lec 56 - Diffusion in glasses-1
Lec 57 - Diffusion in ionic solids-1
Lec 58 - Diffusion in ionic solids-2
Lec 59 - Revision of important concepts
Lec 60 - Tutorial 12

Books and references

1. Mehrer, Helmut. Diffusion in solids: fundamentals,methods, materials, diffusion-controlled processes. Vol.155. Springer Science & Business Media, 2007.
2. Paul, Aloke, Tomi Laurila, Vesa Vuorinen, and Sergiy V. Divinski. Thermodynamics, diffusion and the Kirkendall effect in solids. Cham: Springer International Publishing, 2014.

Instructor bio

Prof. Mayur Vaidya

IIT Hyderabad
Dr. Mayur Vaidya is currently an Assistant Professor at the Department of Materials Science and Metallurgical Engineering, IIT Hyderabad. Dr. Vaidya’s PhD, from IIT Madras, was on diffusion behaviour in high entropy alloys and he has since then expanded his research field to understanding diffusion in variety of materials. His pioneering work on tracer diffusion in high entropy alloys formed the basis of his selection for prestigious Young Scientist award by Indian National Science Academy. Dr. Vaidya has 28 research publications in peer-reviewed journals, with over 1700 citations and h-index of 17. Earlier, Dr. Vaidya did his B. Tech and M. Tech at IIT Madras, during which he received Institute Silver Medal for excellent academic performance. At IIT Hyderabad Dr. Vaidya has taught UG core course on Diffusion in Solids, PG core courses on Advanced Thermodynamics of Materials and Advanced Physical Metallurgy, PG electives on Interdiffusion in solids, high entropy materials and phase transformations. He was awarded Research and Teaching Excellence awards – 2023 by IIT Hyderabad. Dr. Vaidya also featured in top 2% scientist list by Stanford University for years 2022 and 2023.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: May 4, 2025 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

Please note that assignments encompass all types (including quizzes, programming tasks, and essay submissions) available in the specific week.

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Hyderabad .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team


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