Cobalt Oxide Designer Silkscreens Very plastic high iron clay

Very plastic high iron clay body

and is typically used in small amounts (5% or less)

A fine grained secondary clay which fires to a light cream with 13% shrinkage at cone 10

adding Frit 3134 to a recipe (to supply boron for example) does not require reduction of clay content

In ceramic glazes it is used as a source of magnesia and calcia

Cobalt Oxide Designer Silkscreens Very plastic high iron clayCobalt Oxide is a metallic coloring oxide that produces blue colors in glazes and is stable at all firing temperatures (unless in very high percentages where it will be black). Cobalt Oxide is the most powerful ceramic colorant and it appears in glaze recipes at 1% or less. Because cobalt oxide is not as finely powdered as cobalt carbonate, cobalt oxide is more likely to create blue specks in the glaze, a quality that we believe can be quite