Micrograph 701 and full record
- Micrograph no
- 701
- Brief description
- Cu-10.5 wt% P
- Keywords
- alloy , bronze , copper, copper phosphide, dendrite , hypoeutectic , metal, phosphorus , porosity
- Categories
- Metal or alloy
- System
- Cu-P
- Composition
- Cu 89.5, P 10.5 (wt%)
- Standard codes
- Reaction
- Processing
- Applications
- Sample preparation
- Technique
- Reflected light microscopy
- Length bar
- 200 μm
- Further information
- This is an example of a hypereutectic alloy. On slow cooling the liquid first solidified as copper phosphide dendrites at approximately 850ºC. The remaining liquid solidified as a eutectic at 714ºC. The copper phosphide is brittle and has cracked due to shrinkage stresses. Note that because of its narrow composition range, there is no coring in the dendrites. This sample also contains some porosity.
- Contributor
- Dr J Marrow
- Organisation
- Department of Materials Science, University of Manchester and UMIST
- Date
- 07/11/02
- Licence for re-use
- Attribution-NonCommercial-ShareAlike 4.0 International
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