15 Apr 2013
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Chapter 5 -
“Not THAT glass, youuu … ”
Chapter 5 -2
Sections: 7.10-7.15 Ceramics and Polymers
•Ceramics
–Test
–Mechanical Behaviour
•Polymers
–Mechanical Behaviour
•Suggested reading: pp 211 -222
Chapter 5 -33
Mechanical Properties of ceramics
Ceramic materials are more brittle than metals.
Why is this so?
• Consider mechanism of deformation
–In crystalline, by dislocation motion
–In highly ionic solids, dislocation motion is difficult
•few slip systems
•resistance to motion of ions of like charge (e.g., anions)
past one another