Tin vanadium yellows

Zirconium oxide is used in the production of ceramic colors or stains for ceramic tile and sanitary wares. Zirconia and siHca are fired together to form zircon in the presence of small amounts of other elements which are trapped in the zircon lattice to form colors such as tin—vanadium yellow, praseodymium—zircon yellow [68187-15-5] vanadium—zircon blue [12067-91 -3] iron—zircon pink [68412-79-3] indium—vanadium orange (105—108). 

Ammonium Vanadate. NH4VO3, used as a source of vanadium in ceramic pigments, e.g. tin-vanadium yellow, zirconium vanadium yellow and turquoise, etc. 

Tin Oxide. Two oxides exist but the more common is stannic oxide, Sn02, m.p. approx. 1630°C sp. gr. 7.0. It is used as an opaciher and in the preparation of colours, e.g. chrome-tin PINK (q.v.). Properties making this oxide of some interest as a special ceramic are its high thermal conductivity and low thermal expansion (20-1000 C) 4 x 10- it is sensitive to reducing atmospheres. Tin oxide has been used for making refractory feeders for high-lead glasses. Tin-Vanadium Yellow. See vanadium... 

Vanadium Yellow or Vanadium-Tin Yellow. A ceramic colour produced by the calcination, at about 1000°C, of a mixture of 10-20% V2O5 (as ammonium metavanadate) and 80-90% Sn02- A stronger yellow results if a small amount of Ti02 is added. These colours can be used in most glazes and either Sn02 or zircon can be used as opaciher. Vanadium-Zirconium Blue (or Turquoise). See zirconium-vanadium... 

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