Material Science

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Author:
topher.mair
ID:
21430
Filename:
Material Science
Updated:
2010-05-31 16:08:53
Tags:
Ceramics
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Description:
Material Science Final
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  1. The Achilles’ heel of ceramics is?
    Surface Cracks
  2. Ceramics can be made cheaply because what are the most abondent elements in the earth’s crust?
    oxygen, silicon and aluminum
  3. Using cross polarizers allows us to show what at the tip of a crack?
    Stress concentration
  4. How can we strengthen ceramics?
    Eliminate the cracks, or stop them from growing
  5. Match the mechanism with the process:
    1. Close surface cracks
    2. Eliminate surface cracks
    3. Limit surface cracks motion
    • 1. Implant large atoms in surface
    • 2. Flame polish a glass to remelt the surface to heal cracks
    • 3. Make crystals smaller
  6. T/F - The high strength of Corning Ware® is due to the larger crystals.
    False
  7. T/F - In Vision Ware® the crystals are even smaller than those in Corning Ware®.
    True
  8. T/F - Divitrification eliminates transparency in materials
    True
  9. T/F - Divitrification makes the material smaller
    True

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