How To Use Cobalt Oxide In Ceramics

The most commonly used metallic oxides and their resultant colors are as follows.

How to use cobalt oxide in ceramics.

Cobalt oxide coo or co3o4 is a consistent reliable oxide and a common colorant in. One or more of the oxides of copper manganese and chrome are added in many black glazes. Glazes high in iron black tend to fade brown and glazes with high amounts of cobalt tend to fade blue over a white glazes. Using copper carbonate as a patina colorant material requires this glaze layer.

Brush oxides on greenware bisque and or glaze. Make some slip and add some oxides to create colors. Be very careful. To get more random blotchy colors don t mix too well.

Top 10 ways to decorate with oxides. Commonly used oxide colorants include cobalt oxide black copper oxide red iron oxide and manganese dioxide. Patinas are best applied after the bisque firing using a dry sponge or paintbrush. Opaque white gloss clear satin white celadon cobalt blue newt cake temmoku use only rutile wash winokur yellow.

It discusses the importance of wiping back how to avoid uneven coverage and many other useful hints. Here is a list of suggested glazes to use. Cobalt oxide blue to blue violet. A simple black glaze can be made with 9 red iron oxide plus 2 cobalt.

Brush oxide wash over an unfired glaze then fire. Lesser amounts of mgo will produce lavender larger amounts combined with an opacifier will produce a strong grape purple. A demonstration of how to use an oxide wash on pottery. Alumina and titania in a cobalt glaze will shift the fired glaze color from blue to green.

To get more uniform colors mix well.