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Materials for Ceramics

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Stain (pinks)

Description: Pinks/Crimsons (CrAl, CrAlZn)

Notes

Chrome-alumina pinks have metameric properties, making a shade appear different under different light conditions. It is therefore very difficult to obtain precise matchings with other types of pinks for identical shades under both natural and artificial illumination.

Color Range
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Chrome-alumina can produce a color range of peach through pink to bluish pink.

Stability/Kiln Atmosphere
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Excellent at firing temperatures up to 1300C with glazes having a high content of zinc oxide and alumina and a low content of lime. Should be fired in an oxidizing atmosphere.

Compatibility
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Suitable for blending with all types of zircon based colors, tin-vanadium yellows and chrome browns. Blends with zircon-vanadium blues tend to produce shades of grey.

Cost
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Relatively low.

Note: This description is taken from information provided by Blythe Matthey and may or may not apply to stains of this family from other companies.

Related Information

Links

Oxide	Analysis	Formula	Tolerance

Materials	Stain
Typecodes	Colorant Metallic based materials that impart fired color to glazes and bodies.

Mechanisms

Glaze Color	According to Mason Color: This type of pigment requires the correct glaze chemistry in all temperature ranges, in order to maximize the "color value". High calcium content is most important, and zinc & magnesia must be low to zero. Boron should not be too high. A major complication is that these rules do not necessarily apply when "fast-firing" techniques are used. Second, these pigments need an oxidizing atmosphere throughout the firing cycle.

Glaze Color

According to Mason Color: This type of pigment requires the correct glaze chemistry in all temperature ranges, in order to maximize the "color value". High calcium content is most important, and zinc & magnesia must be low to zero. Boron should not be too high. A major complication is that these rules do not necessarily apply when "fast-firing" techniques are used. Second, these pigments need an oxidizing atmosphere throughout the firing cycle.

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