Synthesis of a new CaxY2−xVxSn2−xO7 yellow pigment

In this communication a new ceramic pigment based on codoping pyrochlore Y 2Sn2O7 with V 5+ and Ca2+ has been obtained. The limit of solid solution of CaxY 2−xV xSn2−xO7 is around x=0.16. Pigment becomes stable in double firing glazes (CIEL∗a∗b∗=78/5/35 5% w. enamelled) but unstable in single firing glazes such as based on CaO–ZnO–SiO2 chemical system. Using unconventional methods of synthesis the reactivity of the system and final pigmenting power of the powder is enhanced in the case of ammonia coprecipitation of a mixture of nitrates and tin chloride.