The process steps of doping and decolorization of zinc tungstate crystals are as follows:
(1) When decolorizing, first grind ZnO, WO3 and doping materials into powder and mix them evenly, then put them into a crucible, and put them into a buoyancy pulling single crystal furnace;
(2) Use ZnWO4 crystal as the seed crystal and heat it to about 1230°C to grow colorless zinc tungstate crystal. vary with the doping material. It uses Nb2O5 as doping material, its total weight ratio to ZnWO4 is 2×10~1×10, its pulling speed is 3~6mm/h, rotation speed is 20~30 rpm, and the growth rate after the growth is over When the cooling rate is between 40~60℃/h, colorless large-sized zinc tungstate crystals can be obtained. The luminescence performance is the same as that of pure zinc tungstate crystals, and the energy resolution can reach 13%~14%.
More details of tungstate product, please visit website: tungstate.net
Please contact CHINATUNGSTEN for inquiry and order of tungstate:
Email: sales@chinatungsten.com
Tel.: 86 592 5129595
