配方类型:

MISCELLANEOUS

配方说明:

Fire Stoneware Glaze

配方组成:

Na2O3/0.30
This is glaze will mature at about 2170'F. Zinc oxide is also
reported to increase glaze elasticity, strength and chemical durability.
When a large amount of zinc oxide is used in a glaze, it will not
dissolve completely and will impart whiteness. Less zinc oxide is
required for this effect if the alumina and alkaline earths are
decreased. Zinc oxide affects colors in glazes to varying degrees; it
aids blues and tends to impress the formation of greens with chromium
oxide. Zinc oxide causes a greater brilliancy in colors and also tends
to prevent crazing.
A crystalline texture may be developed in glazes by saturation with zinc
oxide. the glaze must first be matured at elevated temperatures and then
cooled to the crystallization range and held for at least 3 hr. Longer
soaking times of ten hours or more will cause the crystals to protrude
from the surface and give the appearance of roughness. the composition
below forms crys

配制方法:

The crystals formed in zinc crystalline glazes are zinc silicates and they may be tinted if various coloring pigments are included in the formulation.