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Chapter 3
MSE 2001
19
Other
Undergraduate 4
04/21/2016

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Cards

Term
Which 3 material classes can form crystal structures?
Definition
Metals, ceramics, polymers
Term
Bravais Lattice
Definition
Tiles space without any gaps or holes.
Term
BCC CN , FCC CN, HCP CN
Definition
8, 12, 12
Term
FCC stacking sequence vs. HCP stacking sequence
Definition
ABCA vs. ABA
Term
Directions symbol
Definition
<> []
Term
Planes symbol
Definition
parenthesis and curlies
Term
As coordination number increases, radius ratio ______.
Definition
Increases
Term
Difference between x-ray constructive interference and destructive interference?
Definition
Destructive interference is the straight line wave.
Term
How many valid 3D lattices are there?
Definition
14
Term
What are the 3D lattices called?
Definition
Bravais lattices
Term
Polycrystalline material
Definition
Made up of "grains"; small crystalline regions that are disoriented from one another
Term
Grain boundaries
Definition
Internal surfaces of finite thickness where crystals of different orientations meet
Term
Polymorphic
Definition
Materials which change their crystal structure at specific temps
Term
Isotropic
Definition
Material property that is independent of direction
Term
Anisotropic
Definition
When material properties depend on direction
Term
Amorphous
Definition
No long-range order
Term
FCC high density plane
Definition
{1 1 1}
Term
BCC high density plane
Definition
{1 1 0}
Term
Which structures have a close-packed plane?
Definition
FCC and HCP
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