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Unformatted text preview: ordinates! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 17
! 5 Crystallographic Directions!
! • A vector of convenient length is positioned such that
it passes through the origin of unit cell.! ! • The length of the vector projections on each of the
three axes is determined (measured in terms of the
unit cell dimensions a, b, and c ).!
• These numbers are multiplied or divided by common
factor to reduce them to the smallest set of integers. !
• The three indices are enclosed in square brackets
(no commas) giving:! [ u v w ] Example! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 17
! 6 Representation of a Series of Parallel Planes! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 17
! 7 FCC Crystals oriented to Look Parallel to Various Planes! (100) (111) (110) (510)
CBEMS 164 – XRD, SEM & Microanalysis: Lecture 17
! 8 Cystallographic Texture!
The OIM technique is really a new type of microscopy used to probe the local
microstructure in polycrystalline materials. Polycrystalline materials are rich in
their diversity, and no single type of micros...
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This note was uploaded on 01/16/2014 for the course CBEMS 164 taught by Professor Porter,j during the Fall '08 term at UC Irvine.
- Fall '08