Photomicrograph Database

Artifact ID BT 0812/1581
Negative Number 1640
Magnification 100x
Etchant AH/HP, FeCl3, K2Cr2O7
Photo Date 8/6/1992


impure copper



Metallographic Description

A cast structure with relatively faint dendrites. Inclusions, some being copper oxides, are concentrated in the arms of the dendrites and the grain boundaries. Many large gas voids. The color and the EDAX say that this is an impure copper.

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