| A NOTE ON COMPOUNDING OPAQUE GLAZE
WITH TIN OXIDE |
K. N. MADHAV-\ PANICKAR B. A., Dip. Cer. (Hons.)
Pages : 32-33
DOI : 10.1080/0371750X.1948.10877845 |
| Abstract |
| Tin oxide is famous as a typical opacifier in opaque glazes.
But its high cost makes its lavish use prohibitory. More over,
an excess of it, above a certain critical amount produces crawling
defects and less fusing in the glaze. Commercial tin oxide varies
widely in grain size and bulk density according to the different
manuf~cturing processes. The best variety of tin oxide suitable
for the production of an opaque gla~e is that of fine grain size
and bulk density. The cheap grades of tin oxide usually contain
about 2% to 3% of antimony oxide as an impurity. Higher proportion
of this variety of tin oxide imparts a grayish blue tint to the
glaze and hence spoils its beauty. So much from the purchasing
point of view of tin oxide intended for the production of
opaque glazes. |
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