Podcast
Questions and Answers
What is diffusion?
What is diffusion?
- The random movement of atoms within an essentially pure material
- The diffusion of small atoms from one interstitial position to another in the crystal structure
- The movement of atoms from high to low concentration (correct)
- The movement of atoms from low to high concentration
Which mechanism of diffusion involves the diffusion of small atoms from one interstitial position to another in the crystal structure?
Which mechanism of diffusion involves the diffusion of small atoms from one interstitial position to another in the crystal structure?
- Vacancy diffusion
- Self-diffusion
- External diffusion
- Interstitial diffusion (correct)
In what type of material does self-diffusion occur?
In what type of material does self-diffusion occur?
- Alloy
- Elemental solid (correct)
- Compound material
- Polymer
What is a solid solution?
What is a solid solution?
What is vacancy diffusion?
What is vacancy diffusion?
What is the consequence of the constant thermal motion of atoms, molecules, and particles?
What is the consequence of the constant thermal motion of atoms, molecules, and particles?
Which type of diffusion involves the migration of atoms within an elemental solid?
Which type of diffusion involves the migration of atoms within an elemental solid?
What is the term for the addition of impurity atoms to a metal resulting in the formation of a homogenous composition throughout?
What is the term for the addition of impurity atoms to a metal resulting in the formation of a homogenous composition throughout?
Which law describes steady-state diffusion in materials?
Which law describes steady-state diffusion in materials?
In which mechanism for diffusion does an atom leave a regular lattice position to fill a vacancy in the crystal?
In which mechanism for diffusion does an atom leave a regular lattice position to fill a vacancy in the crystal?
Which type of diffusion involves the migration of small atoms from one interstitial position to another in the crystal structure?
Which type of diffusion involves the migration of small atoms from one interstitial position to another in the crystal structure?
What is the term for mass transport by atomic motion as a consequence of the constant thermal motion of atoms, molecules, and particles?
What is the term for mass transport by atomic motion as a consequence of the constant thermal motion of atoms, molecules, and particles?
In which mechanism for diffusion does an atom leave a regular lattice position to fill a vacancy in the crystal?
In which mechanism for diffusion does an atom leave a regular lattice position to fill a vacancy in the crystal?
What is the term for the addition of impurity atoms to a metal resulting in the formation of a homogenous composition throughout?
What is the term for the addition of impurity atoms to a metal resulting in the formation of a homogenous composition throughout?
Which law describes non-steady-state diffusion and is represented by Fick’s Second Law?
Which law describes non-steady-state diffusion and is represented by Fick’s Second Law?
