Photomicrograph Database

Artifact ID BCES 0269/0672
Negative Number NS159
Magnification 200x
Etchant AH/HP, FeCl3
Photo Date 4/3/2000

Photomicrograph Description

Corrosion has advanced since the previous photomicrograph was taken. Close-up of large twinned redeposited grain of copper.





Metallographic Description

Cored dendritic, with much interdendritic corrosion. No second phase remains, though some of the corrosion reflects the jagged shape one expects of alpha+delta eutectoid. Twinned redeposited copper has filled some large gas voids. Along one side, there are what appears to be corroded strain marks.

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