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The effects of kiln atmosphere on glaze color and texture
Mark, Monette
Mark, Monette
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grasp-2008-67.pdf
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2008-04-25
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Conference paper
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Mark, Monette (2008) . The effects of kiln atmosphere on glaze color and texture . In Proceedings: 4th Annual Symposium: Graduate Research and Scholarly Projects. Wichita, KS: Wichita State University, p.141-142
Abstract
This experiment studies the effects of the chemical colorants,
red iron oxide (Fe2O3), copper carbonate (CuCO3), cobalt
carbonate (CoCO3), black nickel oxide (Ni2O3), titanium dioxide
(TiO2), and rutile, an iron contaminated titanium mineral, in five
different glaze bases. As a control group, each glaze base will be
fired without added chemical colorants. These glazes are then
fired to pyrometric equivalent cone 10 (2340˚F). Pyrometric
cones, which measure heat (a function of temperature over
time), are standard use in studio ceramics. Each glaze will be
fired in three different kiln atmospheres: reduction, oxidation,
and reduction with the addition of sodium carbonate, or soda ash
(Na2CO3). A natural gas fueled kiln will be in each case, with
alterations made to fuel:air ratios to create reduction or
oxidation atmospheres. A natural gas kiln will also be used in
the firing implementing the soda ash, which will be introduced
into the kiln at 2300˚F.
The expected results include a variation of color and surface
in the different kiln atmospheres. The reduction with soda ash
atmosphere is expected to show the greatest variation in texture
due to the addition of this vaporized chemical, which will
unevenly coat the ceramic tiles in places and melt the glaze,
adding areas of glossy surface and color variation. While the
oxidation environment will show differences in color variation
in comparison to the reduction atmosphere, especially within the
glazes containing the addition of copper carbonate CuCO3.
Test results from each group will be displayed for visual and
tactile inspection.
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Description
Paper presented to the 4th Annual Symposium on Graduate Research and Scholarly Projects (GRASP) held at the Hughes Metropolitan Complex, Wichita State University, April 25, 2008.
Research completed at the Department of Studio Art, College of Fine Arts
Research completed at the Department of Studio Art, College of Fine Arts
Publisher
Wichita State University. Graduate School.
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GRASP
v.4
v.4