Interactions between a glaze and an inlay
The inlay glaze, iron_8_R_C10_13PSi is a glossy purple aventurine with a
dusting of silvery particles.
Neither the metallic glitter, nor the purple color are visible in either the
inlay or the interface of
The background glaze apparently flowed over and assimilated the
inlay glaze in its entirety,
The design is created by adhering a mask and then applying the main
glaze. After drying, the entire pot is
150 deg F an hour to 250 deg F
400 deg F an hour to 1800 deg F
300 deg F an hour to 2050 deg F
120 deg F an hour to 2310 deg F with a hold of 20 minutes at 2310 deg F
300 deg F an hour to 1750 deg F then a half hour hold at 1750 deg F
300 deg F an hour to 1700 deg F then a Three hour hold at 1700 deg F
25 deg F an hour to 1650 deg F then a one hour hold at 1650 deg F
K2O 0.20
Al2O3 0.51
SiO2 2.97
molecular percent Silica 61.5%
K2O 0.11
Al2O3 0.56
SiO2 3.12
molecular percent Silica 63%
The mask for the inlay was a narrow band not more than a quarter inch in
width. The inlay glaze is fluid,
Vapor-like wisps of bluish green demarcate parts of the boundary of the inlay.
The inlay itself is comprised of swirls
The proportioned blends of two glazes that are applied to the tiles of a
line blend are thoroughly mixed before melting.
The cracks seen in the pictures are crazing.
glaze iron_8_R_C10_13PSi
the inlay with the matrix glaze
satIron_ZG_1S_1Munge_3MMg_0.
generating in the process an entirely new and
distinct confection.
coated in wax, then the mask is
removed and the open area filled in with a second glaze.
Image of the glaze satIron_ZG_1S_1Munge_3MMg_0 with inlay
iron_8_R_C10_13PSi
mug is 4.5 inches in high
Close-up Images of the interaction region
oxidation firing to cone 10 in an electric kiln
Firing profiles
Up Fire profile
Down Fire Profile
Clay body is a grolleg porcelain from Tacoma Clay Art Center.
Glaze Composition
Background glaze
Empirical Formula satIron_ZG_1S_1Munge_3MMg_0 :
Na2O 0.43
Li2O 0.20
CaO 0.16
MgO 0.01
Fe2O3 0.19
P2O5 0.17
Inlay Glaze
Empirical Formula iron_8_R_C10_13PSi :
Na2O 0.45
Li2O 0.25
CaO 0.17
MgO 0.02
Fe2O3 0.28
Remarks
liquid like water, while the matrix glaze
viscous with high surface tension. What is seen is the effect of the inlay
glaze consumed by the matrix glaze as the inlay glaze flowed into the
edge of the viscous matrix glaze.
of pale yellow, orange, and deep rust
red with flecks of gold. This is the result of non-uniform chaotic mixing and
chemical reacting of liquids.
Here the glazes set
down next to each other, melt independently, then diffuse and react.
In the interface, we see
more distinct colors and textures than we
would expect to see in a line blend.