2011 APS104-MSE-Chapter05-NPK-L30,31[1].pdf

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Chapter 5 -
“Not THAT glass, youuu …
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Chapter 5 -2
Sections: 7.10-7.15 Ceramics and Polymers
Ceramics
Test
Mechanical Behaviour
Polymers
Mechanical Behaviour
Suggested reading: pp 211 -222
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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
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