Category: Glaze > Green > Titanium
Created 2017-09-24 23:32:20 by Sid Henderson
Categories: Glaze > Green > Titanium
Firing Temperature: Δ10-11
Atmospheres: Oxidation, Reduction
Surface Type: Matte - Smooth
Transparency: Opaque

I discovered this glaze on accident while trying to make a batch of Reitz green. Someone in my studio had mixed black iron with black cobalt oxide.

This glaze has a lovely stony matte finish. If applied very thin on light stoneware it creates a gold tan color. Slightly thicker glaze application yields a black color. A heavier application creates a blue-green color.

Applying this glaze extremely thick somehow creates little pimples that create a rough, not food safe texture, so mix to a specific gravity of 145-155, and dip 1-3 times for the different colors.

This glaze is fairly reliable and seems to appear the same whether its very reduced, lightly reduced, or slightly oxidized.

Material Amount Batch Subtotal
Nepheline Syenite (Theoretical) 70
Petalite 15
Ball Clay (Theoretical) 8
Whiting 5
Gerstley Borate 2
Total Base:100
Rutile 2
Bentonite 2
Black Iron Oxide 0.5
Cobalt Oxide 0.5
Total: 105

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO Li2O K2O Na2O KNaO P2O5 FeO Fe2O3 TiO2 CoO LOI
Nepheline Syenite (Theoretical)7042.4916.310.070.493.226.8610.080.070.49
Petalite1511.772.50.73
Ball Clay (Theoretical)84.7220.020.020.070.030.10.080.080.96
Whiting52.812.2
Gerstley Borate20.30.020.540.070.390.010.080.090.010.59
Rutile20.21.8
Bentonite21.190.40.040.020.020.060.080.070.2
Black Iron Oxide0.50.130.330.04
Cobalt Oxide0.50.470.03
Total10560.4721.230.540.23.730.733.327.0310.3500.130.761.880.474.51
100% no LOI 60.1821.130.530.23.710.733.3710.300.130.751.870.46

Unity Molecular Formula (UMF)

FLUXES

RO/R2O

0.46 Na2O
0.14 K2O
0.1 Li2O
0.27 CaO
0.02 MgO
STABILIZERS

R2O3

0.85 Al2O3
0.03 B2O3
GLASS-FORMERS

RO2

4.11 SiO2
0.1 TiO2
OTHER

 

0.02 Fe2O3
0.01 FeO
0.03 CoO
SILICA:ALUMINA

SiO2:Al2O3

4.83

FLUX RATIO

R2O:RO

0.71 : 0.29

SiO2:Al2O3 Chart

Closest 4 neighbors in Glaze > Green > Titanium.

Click and drag to zoom
Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 4.83

Similar Base Recipes

Δ9 - 10

Similar RO/R2O Unity Formulas

R2O3 - STABILIZERS RO2 - GLASS FORMERS RO/R2O - FLUXES
Recipe Name ΔTemp Al2O3 B2O3 SiO2 ZrO2 SnO2 TiO2 KNaO K2O Na2O CaO MgO ZnO BaO PbO Li2O SrO
Reitz Chamelion 10-11 0.85 0.03 4.11 0.1 0.6 0.14 0.46 0.27 0.02 0.1
Val Cushing Cobalt Green (from CM) 9-10 0.9 0.03 4.07 0.09 0.6 0.14 0.46 0.27 0.02 0.1

No reviews yet.

Hazards

09/2016 Note: This is a new feature. If a recipe material is not listed, that material's data has not yet been added. Some materials only have GHS ratings, while others only have HMIS ratings. Warnings differ between systems and countries. Glazy does not take any responsibility for accuracy of linked SDS information. Contact your ceramics supplier for safety information for your specific materials.
Globally Harmonized System (GHS) Hazardous Materials Identification System (HMIS) SDS Link
Material Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
Petalite
Whiting Harmful WARNING Causes eye irritation
Gerstley Borate
Rutile 1 0 0
Bentonite Harmful WARNING Causes eye irritation
Causes skin irritation
May cause respiratory irritation
Black Iron Oxide Health Hazard WARNING May cause damage to lung through prolonged or repeated exposure by inhalation.
Cobalt Oxide HarmfulHealth Hazard WARNING Suspected of causing cancer
Harmful if swallowed
May cause allergy or breathing difficulties if inhaled
May cause an allergic skin reaction
2 0 0 *