Chp. 7: Amorphous Materials

Question 1

What does amorphous mean?

Answer 1

Atoms of a material move freely and are arranged randomly without long range orde.

Question 2

Long Range Order vs. Short Range Order

Answer 2

Long range order means that the crystalline structures are continuously the same for a long amount of distance. Short range ordered materials have only a few cluster of atoms, or basically no order over any longer distance.

Question 3

Quenching

Answer 3

Rapid cooling of a material.

Question 4

Devitrification

Answer 4

Allowing molecules to move around more so that they form very small crystals, which removes the glossy state.

Question 5

Fluxing Ions

Answer 5

replacing strong covalent bonds with weaker ionic bonds. Ex. Adding sodium to molten glass

Question 6

Properties of an amorphous metal

Answer 6

There would not be planes of atoms to slip, so it’d be very strong yet very brittle and less dense.

Question 7

Amorphous Magnetic Metals

Answer 7

Don’t have crystals and no crystal directions which allows them to be equally easily in all directions and the direction of magnetization can be easily changed.

Question 8

Amorphous materials are usually…

Answer 8

glass and polymers.