3.020 | Spring 2021 | Undergraduate

Thermodynamics of Materials

Calendar

The schedule below is intended to give independent learners an idea of the timings of readings, lectures, and assignments in order to plan a course of study. Please refer to the readings section for full text citations.

Session Topics Text Due Dates

Class 1

 

Introduction to thermodynamics

  • Entropy and spontaneous processes
  • Molecular interactions and enthalpy
  • Scope of thermodynamics, matter at equilibrium
  • Use of thermodynamics, phase diagrams and other maps
  • CALPHAD and Thermo-Calc

Ferrie: Statistical Physics for Babies -
Class 2

Scope and use of thermodynamics

  • Systems, phases, states, and state functions
  • Equations of state
  • Compressibility and thermal expansion
  • Extensive vs intensive properties

DeHoff: ch. 1, 2.1–2.2 -
Class 3

Process variables and the First Law

  • Conceptual introduction to work and heat
  • Classifying processes: Adiabatic, isobaric, isochronic
  • Heat capacity
  • First law

DeHoff: ch. 2, 3.1 -
Class 4

Heat engines and energy conversion efficiency

  • Heat engines
  • Carnot cycle with ideal gas
  • Carnot efficiency
  • Clausius’ theorem

DeHoff: App. H -
Lab 1 (Virtual) Phase diagrams for materials selection: Fe-C: Understanding phase diagrams and their role in materials selection and design - CI-M presentation topic
Class 5

Second Law and entropy maximization

  • Combined statement of first and second laws
  • Equilibrium in an isolated system

DeHoff: ch. 3.2–3.5, 5.1-5.2 Pset 1
Class 6

Thermodynamic potentials

  • Chemical potential
  • General strategy

DeHoff: ch. 4 -
Class 7

Ideal gas processes

  • Adiabatic
  • Isothermal
  • Free expansion

DeHoff: ch. 4 -
Class 8

Mathematical implications of equilibrium and spontaneous processes

  • Mathematical formulation of entropy max
  • Equilibrium conditions for a unary, heterogeneous system
  • Partial thermodynamic equilibrium
  • Spontaneous processes and entropy generation

DeHoff: ch. 5 Pset 2
Class 9 Case studies: Specific heats and phase transformations - -
Exam 1 - -

Lab 1 write-up

CI-M presentation rough draft (ungraded)

Class 10

Introduction to unary phase transformations

  • Unary phase transformations
  • Gibbs surfaces
  • Reaction/transformation quantities

DeHoff: ch. 7.1–7.2 -
Class 11

Phase coexistence in unary systems

  • Clausius-Clapeyron equation
  • Vapor pressure
  • Gibbs phase rule

DeHoff: ch. 7 -
Class 12 Case studies: Saturation vapor pressure - -
Class 13

Introduction to ideal (gas) mixtures

  • Dalton’s rule
  • Gibbs free energy of an ideal gas mixture
  • Balancing chemical reactions

Denbigh: ch. 4.1–4.5 Pset 3
Class 14

Reacting gas mixtures at equilibrium

  • Minimum Gibbs free energy for an ideal gas chemical reaction
  • Reaction equilibrium constant and LeChatelier’s principle
  • van’t Hoff equation

Denbigh: ch. 4.1–4.9 -
- - - CI-M Presentation slide deck
Class 15

Introduction to solutions, general case

  • Solubility and solubility limits
  • The process of making solutions
  • Difference between reactions and solutions
  • Introduction to solution modeling

Callister: ch. 9.–9.6                    
DeHoff: ch. 8.1
Pset 4
Class 16

Partial molar properties

  • PMP definition
  • Gibbs-Duhem equation
  • Calculating PMPs from solution models, including graphical solution

DeHoff: ch. 8.1–8.4 -
Class 17

Solution models: Ideal, dilute, and regular

  • Ideal gas mixtures and the ideal solution model
  • Non-ideal solutions, activity, and activity coefficients
  • Dilute solution model, Henry’s and Raoult’s laws
  • Regular solution models

DeHoff: ch. 8 -
Lab 2 (Virtual)

Thermal energy storage: Phase change materials

  • Understand binary phase diagrams: Solidus, liquidus, eutectics
  • Understand and quantify thermodynamic quantities, e.g., heat capacity, latent heat of fusion

 

- Annotated bibliography due
Class 18 Case study in reacting gas mixtures; introducing the Nernst equation - Pset 5
Exam 2 - - -
Class SP1*

Social and personal 1

  • Discuss social and personal aspects of working in the field of materials science

See readings section for options -
Class 19

Regular solutions models and stability

  • Quasi-chemical model
  • Temperature-dependence of the simple regular model
  • Stability and spontaneous unmixing

DeHoff: ch. 8 -
Class 20

Introduction to binary phase diagrams

  • Chemical potential in multicomponent systems
  • Equilibrium conditions in multi-component, multi-phase systems
  • Gibbs phase rule for multicomponent, heterogeneous systems

Callister: ch. 9.7, 9.8  

DeHoff: ch. 9, 10.1

-
Class 21

Phase coexistence and separation

  • Condition for 2-phase coexistence
  • Common tangent construction
  • Spinodal phase diagram

DeHoff: ch. 9, 10.1 -
Class 22

Free energy-composition diagrams, general case

  • Reference states
  • Drawing free energy-composition diagrams

DeHoff: ch. 10.1 Pset 6
Class 23

Building binary phase diagrams, part I

  • Taut rope construction
  • Lens diagrams
  • Eutectic systems

DeHoff: ch. 10 -
Class 24

Building binary phase diagrams, part II

  • Peritectic systems
  • Intermediate phases
  • Exploring Thermo-Calc
  • Line compounds (if time allows)

DeHoff: ch. 10 Pset 7
Class 25

Building binary phase diagrams, part III

Case study: Modeling the Cr-Fe system

DeHoff: ch. 10 -
Class 26 CALPHAD: Case studies and Prof. Olson guest lecture DeHoff: ch. 10 -
Class 27

Introduction to statistical thermodynamics

  • Macrostates and microstates
  • Counting microstates
  • Ensembles and ergodicity

DeHoff ch. 6 Pset 8
Lab 3  (Virtual)

Computational statistical thermodynamics

  • Understand probability distributions and the Boltzmann distribution
  • Understand origin of temperature from microscopic degrees of freedom 
  • Understand fluctuations and thermalization                    
     

- -
Class 28

Boltzmann hypothesis

  • Boltzmann hypothesis
  • Configurational entropy
  • Setting up maximum entropy for isolated system

DeHoff ch. 6,

Chandler ch. 3

-
- - - Literature review full draft (ungraded)
Class 29

Boltzmann distribution

  • Boltzmann distribution as equilibrium condition
  • Microcanonical and canonical ensembles
  • Partition functions

DeHoff ch. 6

Chandler ch. 3

-
- - -

Pset 9

Literature review final draft due

Class 30 Intermediate phases and reactions

DeHoff: ch. 10, 11.1–11.2  

Callister: ch. 9.13  

Denbigh: ch. 4.8

-
- - - Lab 3 write-up
Class 31

Reacting multi-phase systems

  • Solid-vapor equilibrium
  • Oxidation and Richardson-Ellingham diagrams

DeHoff: ch. 11 -
Class 32 Case study: Reacting, multi-component, multi-phase systems - Pset 10
Class SP2*

Social and personal 2

  • Discuss social and personal aspects of working in the field of materials science

See readings section -
Class 33 Gameshow (in-class exam review) - -
Final Exam - - -

*Novel for the course this year, two class sessions were devoted to discussing the social and personal aspects of working in the field of materials science. The intention was to have students explore their individual purpose and motivation for pursuing careers in science and engineering, and to have them think about the impact of their work on the wider world.

Please note that the information on this page was intended for students enrolled in the residential MIT course and is included to provide insight into how the course was conducted in Spring 2021. OCW is not a distance education program, and we do not offer instructor interactions, grading, or certification of completion.

Course Info

As Taught In
Spring 2021
Learning Resource Types
Lecture Videos
Instructor Insights
Lecture Notes
Presentation Assignments
Problem Sets
Readings
Demonstration Videos