Fusion Frit F-581

Description: Strontium frit

Oxide	Analysis	Formula
Na2O	5.00%	0.18
SrO	39.00%	0.82
Al2O3	8.00%	0.17
B2O3	7.00%	0.22
SiO2	41.00%	1.49
Oxide Weight		218.77
Formula Weight		218.77

Related Information

Frits instead of raw zinc, lithium, barium, strontium

zinc, lithium, barium, strontium oxide powders

Raw material sources of zinc, lithium, barium, strontium have issues (e.g. precipitates in glaze slurries, toxicity, high drying shrinkage and carbon burnoff that affect laydown and fired surface defects like pinholes, blisters, orange peeling, crystallization). Yet the oxides that these materials supply to the glaze melt - ZnO, Li₂O, BaO and SrO, can be sourced from frits which melt much better and remove most of the problems. Consider examples made by Fusion:
-Frit F-493 has 11% Li₂O
-F-403 has 35% BaO
-F-581 has 39% SrO
-FZ-16 has 15% ZnO
These frits source other oxides but such are common in most glazes and glaze calculation can be used to retain the overall chemistry. Although these are expensive, the benefits are game changers. But there is a problem: Potters can't get these. Therefore they have difficulty creating the dazzling visual effects of many commercial glazes.

Links

URLs	http://www.fusionceramics.com/ Fusion Ceramics Frit Website
Typecodes	Frit A frit is the powdered form a man-made glass. Frits are premelted, then ground to a glass. They have tightly controlled chemistries, they are available for glazes of all types.

By Tony Hansen
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