P12 - Ceramic Crystal Structure: More than 1 atom type. 1....

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Interstices: Sites formed in voids in crystal structures. Simple Cubic (SC) – 8 fold site in center Body Centered Cubic (BCC) – 6 fold sites (Face centered; Edge centered) Face Centered Cubic (FCC) – 6 fold sites (Edge centered) 4 fold sites (Under corner atoms) Hexagonal Closest Packed (HCP) – 6 fold sites (Edge centered) 4 fold sites (Under corner atoms)
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Unformatted text preview: Ceramic Crystal Structure: More than 1 atom type. 1. Anions in BCC, FCC, HCP, and SC sites 2. Cations in interstitial sites- 8 fold in SC- 6 and 4 fold sites in FCC FCC sites: 1 8 atom corner ae x 8 corners = 1 atom 1 2 atom face center ae x 6 face centers = 3 atoms Anions = 4 ions/cell...
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This note was uploaded on 03/21/2011 for the course CHE 332 taught by Professor Gregory during the Spring '11 term at Rhode Island.

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