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Microstructural Evolution in Materials

This module is Part 2 of a four-part series on the Microstructural Evolution in Materials. Taken together, these four modules provide similar content to the MIT Course 3.022: Microstructural Evolution of Materials.

This series introduces various kinetic phenomena in various classes of materials. The course explains how materials develop different microstructure based on different processing techniques, and it relates these microstructures to the properties of the material.

Microstructural Evolution of Materials is intended for engineering and science students and professionals with an interest in materials statistics, kinetics, and microstructural transformations.

Part 1 of the course will introduce important concepts in statistical mechanics that are especially relevant to materials scientists. Topics include solid solutions, the canonical ensemble and heat capacity.

Part 2 of the course focuses on point defect evolution, including diffusion, substitutional diffusion, ionic defects, and ionic conductivity.

Part 3 of the course discusses surfaces and surface-driven reactions. Topics include surface energy, faceted and non-faceted growth, and growth and ripening.

Part 4 of the course focuses on phase transformations, including nucleation and growth, precipitate growth, interface stability, and glass transition.

What you'll learn

  • Fick’s First Law of Diffusion
  • The Diffusion Coefficient
  • Fick’s Second Law of Diffusion
  • Analytic Solutions to Fick’s Second Law
  • Example #1: Meat Processing
  • Example #2: Doping of Semiconductors
  • Example #3: Chemical Strengthening of Glass
  • Kinetics of Substitutional Self-Diffusion
  • Example: Substitutional Self-Diffusion in Gold
  • Vacancy Diffusion
  • Vacancy Sources and Sinks
  • Kirkendall Effect
  • Motion of Crystal Planes
  • Interdiffusion in Ionic Solids
  • Types of Point Defects
  • Kröger-Vink Notation
  • Defect Reactions
  • Equilibrium Constant for Defect Reaction
  • Charge Compensation in Ionic Solids
  • Charge Compensation in Non-Stoichiometric Solids
  • Introduction to the Brouwer Approximation
  • Brouwer Diagrams
  • F-Centers
  • An Introduction to Ionic Conductivity
  • Applications of Ionic Conductors
  • Understand the microscopic mechanisms that govern diffusion
  • Explain how ion exchange can be used to chemically strengthen glass
  • Predict the charge carrier concentration in various charge compensation regimes using the Brouwer approximation

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Length 5 weeks
Effort 8 - 10 hours per week
Starts On Demand (Start anytime)
Cost $49
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Instructors Juejun Hu, Jessica Sandland
Download Videos On all desktop and mobile devices
Language English
Tags Engineering

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Rating Not enough ratings
Length 5 weeks
Effort 8 - 10 hours per week
Starts On Demand (Start anytime)
Cost $49
From edX
Instructors Juejun Hu, Jessica Sandland
Download Videos On all desktop and mobile devices
Language English
Tags Engineering

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