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These metal oxides have been mixed with 50% Ferro frit 3134 and fired to cone 6 oxidation. Chrome and rutile have not melted, copper and cobalt are extremely active melters, frothing and boiling. Cobalt and copper have crystallized during cooling. Manganese has formed an iridescent glass.
Glossary |
Metallic Glazes
Non-functional ceramic glazes having very high percentages of metallic oxides/carbonates (manganese, copper, cobalt, chrome). |
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Glossary |
Flux
Fluxes are the reason we can fire clay bodies and glazes in common kilns, they make glazes melt and bodies vitrify at lower temperatures. |
Glossary |
Melting Temperature
The melting temperature of ceramic glazes is a product of many complex factors. The manner of melting can be a slow softening or a sudden liquifying. |
Glossary |
Metal Oxides
Metal oxide powders are used in ceramics to produce color. But a life time is not enough to study the complexities of their use and potential in glazes, engobes, bodies and enamels. |
Glossary |
Refractory
In the ceramic industry, refractory materials are those that can withstand a high temperature without deforming or melting. Refractories are used to build and furnish kilns. |
Glossary |
Colorant
In ceramics and pottery, colorants are added to glazes as metal oxides, metal-oxide-containing raw materials or as manufactured stains. |
Materials |
Iron Chromate
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Materials |
Copper Oxide Black
The purest source of CuO copper oxide pigment used in ceramic glazes. |
Materials |
Cobalt Oxide
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Materials |
Cobalt Carbonate
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Materials |
Chrome Oxide
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Materials |
Rutile
A raw TiO2-containing mineral used in ceramics to color and variegate glaze surfaces. |
Materials |
Manganese Dioxide
A source of MnO used in ceramic glazes and the production of ceramic stains. Commonly made by grinding pyrolusite rock. |
Materials |
Ceramic Rutile
Rutile mineral ground to a very fine particle size (e.g. 325 mesh) contributes titanium and iron that colors and variegates ceramic glazes. |
Materials |
Iron Oxide Red
Red iron oxide is the most common colorant used in ceramic bodies and glazes. As a powder, it is available in red, yellow, black and other colors. |
Oxides | CuO - Cupric Oxide |
Oxides | CoO - Cobalt Oxide |
Oxides | Cr2O3 - Chrome Oxide |
Temperatures | Manganese compounds may begin to fume (932-) |
Temperatures | Manganese dioxide decomposes to MnO (470-1200) |
Temperatures | Manganese oxide melts (1785-) |
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