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Materials for Ceramics

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Stain (green/blue-green)

Description: Vanadium Greens (ZrPrV, ZrVSn, ZrV)

Notes

Vanadium greens are based on mixtures of zircon-vanadium blue with either zircon-praseodymium, tin-vanadium or zircon-vanadium yellows. All the colours should be specially treated to remove soluble salts.

Color Range
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Shades of green ranging from yellow-greens through turquoise greens to turquoise blue-greens. Those based on praseodymium are cleaner in shade.

Specific Gravity: 4.25 to 6.25

Stability/Kiln Atmosphere
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Excellent in all types of glazes and bodies for firing at temperatures up to:

over 1300 C for Zr-V-Sn greens - oxidising atmosphere
and Zr-V greens - stable even under slightly reducing conditions
over 1250 C for Zr-Pr-V greens - oxidising to slightly reducing atmosphere

No tendency to strike or flash.

Compatibility
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Suitable for blending with most other types of ceramic colours.

In practice, vanadium greens are normally blended only with either zircon-vanadium blue or the appropriate yellow. Those containing tin should not be mixed with chrome-containing stains.

Cost
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Moderate to high depending on yellow content.

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

Body Color	Admirably suited to staining all types of bodies because of freedom from tendency to strike or flash. In reducing conditions, tin-based greens should not be used.
Glaze Color	Suitable for all types of glazes for firing at temperatures up to over 1300C (1250C for Zr-Pr-V). Zircon is recommended as an opacifier, although tin oxide may also be used. Underglaze Color: Suitable for all methods of underglaze decoration. Unlike victoria greens, vanadium greens are suitable for use under all types of glazes.

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