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MSE Ch 1

Materials Science and Engineering

TermDefinition
5 groups of materials 1. metals and alloys, 2. ceramics, glass, glass-ceramics, 3. polymers (plastics), 4. semiconductors, 5. composite materials
The term ___ refers to load or force per unit area. stress
The term ___ refers to elongation or change in dimension divided by original dimension. strain
___ ("stress/strain?") causes ___ ("stress/strain?") stress, strain
The level of stress needed to initiate plastic deformation is known as ___. yield strength
Ceramics are defined as ___. inorganic crystaline materials
___ is an amporphous material. Glass
___ polymers have good ductility and formability. (long molecular chains are loosely connected) Thermoplastic
___ polymers are stronger but more brittle. (molecular chains are tightly linked) Thermosetting
___ contain additives that enhance the properties of polymers. Plastics
The electrical conductivity of semiconducting material is between ___ and ___. ceramic insulators, metallic conductors
In some semiconductors, the level of conductivity can be ___ to enable electronic devices. controlled
___ are developed to blend properties of different materials. Composites
Created by: drjolley