Copper increases lead s solubility.
Copper oxide ceramics.
It the glaze is fluid copper will tend to crystallize heavily.
The oxide form of copper can give a speckled color in glazes whereas the carbonate form will give a more uniform effect.
It produces a very wide range of colors in glazes from greens delicate light greens to turquoise to deep emerald green to red pink blue black yellow and copper luster.
In alkaline glazes copper will produce turquoise.
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Copper oxide is an active metal that combines easily with oxygen which means that it is very sensitive to oxidation and reduction atmospheres.
Black copper oxide cuo is a blackish grey powder used as a colorant in t.
In reduction firing it turns to cu 2 o and gives vibrant red hues.
Red copper oxide cu2o is a reddish powder that is a reduced form of black.
Copper yields a lovely range of greens in lead glazes.