Lect09_notes_alt - University of California Irvine E54 Winter 14 Principles of Materials Science and Engineering Lecture 09 Prof Daniel R Mumm Chemical

Lect09_notes_alt - University of California Irvine E54...

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Principles of Materials Science and Engineering Lecture 09 Prof. Daniel R. Mumm Chemical Engineering and Materials Science Henry Samueli School of Engineering University of California, Irvine [email protected] University of California, Irvine E54, Winter ‘14
ENGR 54 – Principles of Materials Science and Engineering: Lecture 09 2 Today Imperfect Crystals Defects in Crystals Reading assignment: Through Chapter 6
ENGR 54 – Principles of Materials Science and Engineering: Lecture 09 3 Imperfect Crystals So far, we have discussed ideal, perfect structures…. ±What types of defects can we consider? What role do these defects play inthe properties of materials?±What are the various descriptors±What are the energetics and thermodynamic driving forces for defect formation?±How do various defects interact, and effect material properties±What is the equilibrium defect concentration? How does this change withtemperature, pressure, etc.?Overview of crystal defects and point, line and area (planar) imperfections ? ?