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Full Record for Micrograph 4

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Micrograph no
4
Brief description
Al 67, Cu 33 (wt%), eutectic alloy
Keywords
alloy Link to MATTER Glossary entry for alloy, aluminium Link to MATTER Glossary entry for aluminium, copper, eutectic Link to MATTER Glossary entry for eutectic, lamella Link to MATTER Glossary entry for lamella, metal
Categories
Metal or alloy
System
Al-Cu  Link to phase diagram
Composition
Al 67, Cu 33 (wt%)
Standard codes
Reaction
Processing
Unidirectionally solidified
Applications
Sample preparation
Etched in sodium hydroxide solution
Technique
Scanning electron microscopy (SEM)
Length bar
15 μm
Further information
This SEM image shows the lamellar eutectic very clearly. The interlamellar spacing is about one micron. There are several imperfections in the lamellar structure, which have arisen from irregularities and disturbances during growth.
Contributor
Prof T W Clyne
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
25/10/01
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales
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