Materials Science

Video Lectures

Displaying all 39 video lectures.
Lecture 1
Atomic Bonding
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Atomic Bonding
Describes the three types of atomic bonding and presents the equation used to calculate percent ionic character.
Lecture 2
Packing Factor for a Body-Centered Cubic Structure
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Packing Factor for a Body-Centered Cubic Structure
Calculates the atomic packing factor (fraction of the unit cell occupied by atoms) for a body-centered cubic (BCC) structure.
Lecture 3
Calculate Metal Density
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Calculate Metal Density
Calculate the density of a metal from its atomic radius and atomic mass.
Lecture 4
Radius of a Metal Atom and Metal Density
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Radius of a Metal Atom and Metal Density
Uses the unit cell structure and dimensions to determine the radius of a lead atom and the density of lead.
Lecture 5
Crystal Plane Miller Indices
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Crystal Plane Miller Indices
Explains the Miller indices notation used to label planes in a crystal structure.
Lecture 6
(111) Planes in FCC Metal
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(111) Planes in FCC Metal
Determines how many distinct sets of (111) planes are present in a face-centered cubic metal.
Lecture 7
Directions in Crystals
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Directions in Crystals
The indices for directions in a crystal are determined.
Lecture 8
Direction in a HCP Unit Cell
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Direction in a HCP Unit Cell
Draw a direction on hexgonal close-packed unit cell diagram.
Lecture 9
XRD Peak Analysis
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XRD Peak Analysis
Find the Miller indices of a peak in a x-ray diffraction pattern for copper.
Lecture 10
Crystal Systems and Ceramic Structures
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Crystal Systems and Ceramic Structures
The seven crystal systems are discussed and examples of cubic and tetragonal structures are given. Ceramic structures are discussed and an example of the perovskite unit cell is given.
Lecture 11
Tetrahedral and Octahedral Sites
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Tetrahedral and Octahedral Sites
Describe the locations of tetrahedral and octahedral sites in a face-centered cubic (FCC) crystal structure.
Lecture 12
Linear and Planar Densities
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Linear and Planar Densities
Calculates the linear and planar densities of a metal.
Lecture 13
Miller-Bravais Indices: Hexagonal Structure
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Miller-Bravais Indices: Hexagonal Structure
Determines the four-parameter Miller-Bravais indices for an hexagonal unit cell.
Lecture 14
Hume-Rothery Rules
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Hume-Rothery Rules
Applies the Hume-Rothery rules to predict solubility of an aluminum-silicon alloy.
Lecture 15
Point Defects in Ceramics
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Point Defects in Ceramics
Describes vacancy and interstitial defects in a salt crystal.
Lecture 16
Vacancies in Metals
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Vacancies in Metals
Calculates the fraction of vacancies in a copper crystal structure at 1000°C.
Lecture 17
Diffusion into a Solid
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Diffusion into a Solid
Calculates the time for carbon to diffuse into a metal alloy at high temperature.
Lecture 18
Stress-Strain Diagrams
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Stress-Strain Diagrams
Introduction to engineering stress-strain diagrams for metals.
Lecture 19
Engineering Stress and Strain
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Engineering Stress and Strain
Demonstrates how to calculate engineering stress and strain.
Lecture 20
Elastic Properties of Metals
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Elastic Properties of Metals
Uses the elastic properties of metals to select a material for a design problem.
Lecture 21
Electrical Conductivity
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Electrical Conductivity
Compares the electrical conductivities of two metal alloys given voltage drop data in a test circuit.
Lecture 22
Polymer Molecular Weight
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Polymer Molecular Weight
Calculates the number average and the weight average molecular weight from a polymer molecular weight distribution.
Lecture 23
Step-Growth Polymerization
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Step-Growth Polymerization
An introduction to step growth polymerization.
Lecture 24
Addition Polymerization
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Addition Polymerization
Describes the reaction steps in addition polymerization, using free radical polymerization as an example.
Lecture 25
Pressure-Temperature Diagram
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Pressure-Temperature Diagram
Describes the regions of a pressure-temperature projection and the behavior across phase boundaries.
Lecture 26
Solid-Liquid Phase Diagrams
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Solid-Liquid Phase Diagrams
Describes the regions of a liquid-solid, T-x phase diagram for a system composed of Mg and Si.
Lecture 27
Solid-Liquid Phase Diagram for Miscible Metals
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Solid-Liquid Phase Diagram for Miscible Metals
Describes the regions of the T-x phase diagram for two miscible metals, describes the behavior as a liquid is cooled to form a solid, and discusses why the two metals are miscible.
Lecture 28
Cooling Curves for a Liquid-Solid System
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Cooling Curves for a Liquid-Solid System
Uses the information in a phase diagram to draw the temperature dependence on time as a binary liquid alloy is slowly cooled.
Lecture 29
Lever Rule for Solid-Liquid Phase Diagram
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Lever Rule for Solid-Liquid Phase Diagram
Applies the lever rule to a solid-liquid mixture to determine the fraction of each phase in equilibrium and explains the basis for the lever rule.
Lecture 30
Non-Equilibrium Microstructures
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Non-Equilibrium Microstructures
Describes the non-equilibrium solid microstructures that form when a binary liquid alloy cools.
Lecture 31
Phase Diagram with Peritectic Reaction
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Phase Diagram with Peritectic Reaction
Describes the phases that form when a binary liquid is cooled and the mixture undergoes a peritectic reaction.
Lecture 32
Gibbs Phase Rule for Material Science
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Gibbs Phase Rule for Material Science
Explains the Gibbs phase rule and applies to a binary system in which the two components are only partially miscible in the liquid phase.
Lecture 33
Dislocations and Plastic Deformation
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Dislocations and Plastic Deformation
Explains the concepts of dislocations in metal crystal structures and plastic deformation.
Lecture 34
Recrystallization
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Recrystallization
Describes recrystallization and grain growth when a material is plastically deformed.
Lecture 35
Hydrogen Diffusion Through Palladium
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Hydrogen Diffusion Through Palladium
Use Fick's law to calculate the temperature needed to obtain a desired flux of hydrogen, which is diffusing through a palladium membrane.
Lecture 36
Rock Salt Structure
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Rock Salt Structure
Describes the rock salt crystal structure, which is the structure of FeO.
Lecture 37
Unit Cell Length for Iron Oxide
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Unit Cell Length for Iron Oxide
Uses the density and the structure of FeO to determine its unit cell dimension.
Lecture 38
Solid-Liquid Phase Diagram
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Solid-Liquid Phase Diagram
Describes the phases present on a temperature versus mole fraction diagram for the titanium-uranium system using an interactive Mathematica simulation. This simulation is available at: http://demonstrations.wolfram.com/LeverRuleForTheUraniumTita...
Lecture 39
Txy Phase Diagrams for VLLE Tutorial
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Txy Phase Diagrams for VLLE Tutorial
Uses an interactive simulation to demonstrate equilibrium phases for a binary system on a T-x-y diagram where the two components are only partially miscible in the liquid phase. The interactive simulation is available on the Wolfram Demonstration Project website: http://demonstrations.wolfram.com/VaporLiquidLiquidEquilibri...