lect14_reel4_3pg

lect14_reel4_3pg - Solid State Synthesis, Phase Diagrams...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Solid State Synthesis, Phase Solid State Synthesis, Phase Diagrams and Solid Solutions Diagrams and Solid Solutions Chemistry 123 Spring 2008 Dr. Woodward Solid State Reactions Solid State Reactions Micron Sized Powders (Starting Materials) Example: MgO(s) + MoO 3 (s) MgMoO 4 1 Grind 2 Heat 3 Repeat Grind & Heat 4 Two Component Phase Diagram Two Component Phase Diagram Mole % ZnS 0 25 50 75 100 Liquid 2-phase region MgS (ss) + ZnS (ss) MgS (ss) + Liquid ZnS (ss) + Liquid MgS (ss) ZnS (ss) Temperature ( ° C) Pure ZnS Pure MgS A B C Eutectic Point D Mole % (ss) + (ss) (ss) + (ss) + (ss) Pure Pure
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Rock salt type Mg 1-x Zn x S Zinc Blende type Zn 1-x Mg x S Microscopic View Region A Region B Region C Microscopic View Microscopic View Homogeneous Solid Solution Mg 0.8 Zn 0.2 S Homogeneous Solid Solution Mg 0.1 Zn 0.9 S Two phase (heterogeneous) mixture Mg 0.8 Zn 0.2 S + Mg 0.1 Zn 0.9 S How can we analyze materials to determine their composition and heterogeneity. X-ray Fluorescence ray Fluorescence Incoming X-ray
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

lect14_reel4_3pg - Solid State Synthesis, Phase Diagrams...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online