Introduction

Here are the results of a theoritical study using
Richard Zakin’s programme, Describ9.
This programme allows to obtain a statement of
the aspect of a glaze base already in use or of
one you want to develop. I have used this
programme since 1995 to develop many
glaze bases with success.

Voici les résultats d’une étude théorique
réalisée utilisant le programme developpé par
Richard Zakin, Describ9.
Ce programme vous permet d’obtenir un
jugement sur l’aspect d’une glaçure déjà
en service ou d’une que vous voulez développer.
J’ai utilisé ce programme depuis 1995 pour
développer plusieurs bases de glaçures
avec succès.

Jen faraĵoj de abstrakta esploro efektivigita
usante la programo kreita per Richard Zakin,
Describ9.
Tio programo vin ebligas akiri juĝon pri
glazuraspekto jam en servado aŭ kion vi
volas kreskigi. Mi usis tion programon ek de
1995 por kreskigi pluraj glazurbazojn
kun sukseso.

Cone 4 Texturée

Frit 3134 32
Gerstley borate 32
Lithium carbonate 3
EPK 12
Kaolin (Calc.) 11
Silica 10
Total 100

Na2O 0.20 Al2O3 0.23 SiO2 1.66
K2O 0.00 B2O3 0.62 P2O5 0.00
MgO 0.07 TiO2 0.00
CaO 0.62 Fe2O3 0.00
Li2O 0.10

Alumina:Silica ratio is 1.00:7.30
Neutral:Acid ratio is 1.00:1.97
Alk:Neut:Acid ratio is 1.00:0.84:1.66

Expansion: 76.0 x 10e-7 per degree C
Oxides causing abnormal expansion: Li2O B2O3

Cone 4 Satinée/Texturée

Frit 3134 23
Gerstley borate 23
Barium carbonate 10
EPK 13
Kaolin (Calc.) 11
Silica 20
Total 100

Na2O 0.18 Al2O3 0.30 SiO2 2.43
K2O 0.00 B2O3 0.57 P2O5 0.00
MgO 0.07 TiO2 0.00
CaO 0.58 Fe2O3 0.00
BaO 0.17

Alumina:Silica ratio is 1.00:8.06
Neutral:Acid ratio is 1.00:2.79
Alk:Neut:Acid ratio is 1.00:0.87:2.44

Expansion: 73.0 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Cone 4 Satinée/Brillante

Gerstley borate 26
Frit 3134 26
EPK 14
Silica 34
Total 100

Na2O 0.22 Al2O3 0.19 SiO2 3.25
K2O 0.00 B2O3 0.69 P2O5 0.00
MgO 0.08 TiO2 0.00
CaO 0.69 Fe2O3 0.00

Alumina:Silica ratio is 1.00:16.89
Neutral:Acid ratio is 1.00:3.69
Alk:Neut:Acid ratio is 1.00:0.88:3.25

Expansion: 65.5 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Cone 4 Transparente

Frit 3134 21
Gerstley borate 21
EPK 13
Kaolin (Calc.) 10
Silica 35
Total 100

Na2O 0.22 Al2O3 0.38 SiO2 4.17
K2O 0.01 B2O3 0.69 P2O5 0.00
MgO 0.08 TiO2 0.00
CaO 0.69 Fe2O3 0.01

Alumina:Silica ratio is 1.00:10.98
Neutral:Acid ratio is 1.00:3.92
Alk:Neut:Acid ratio is 1.00:1.07:4.18

Expansion: 61.3 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Cone 4 Transparente

Gerstley borate 20
Frit 3134 20
EPK 12
Kaolin (Calc.) 10
Silica 34
Magnesium carbonate 4
Total 100

Na2O 0.18 Al2O3 0.32 SiO2 3.52
K2O 0.00 B2O3 0.57 P2O5 0.00
MgO 0.24 TiO2 0.00
CaO 0.58 Fe2O3 0.01

Alumina:Silica ratio is 1.00:11.08
Neutral:Acid ratio is 1.00:3.97
Alk:Neut:Acid ratio is 1.00:0.89:3.53

Expansion: 60.4 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Cone 4 Satinée/Brillante

Gerstley borate 22
Frit 3134 22
EPK 10
Kaolin (Calc.) 8
Silica 38
Total 100

Na2O 0.22 Al2O3 0.29 SiO2 4.09
K2O 0.01 B2O3 0.68 P2O5 0.00
MgO 0.08 TiO2 0.00
CaO 0.69 Fe2O3 0.01

Alumina:Silica ratio is 1.00:14.00
Neutral:Acid ratio is 1.00:4.21
Alk:Neut:Acid ratio is 1.00:0.97:4.10

Expansion: 61.6 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Cone 4 Satinée/Brillante

Gerstley borate 25
Frit 3134 25
EPK 16
Silica 34
Total 100

Bentonite 1

Na2O 0.22 Al2O3 0.23 SiO2 3.41
K2O 0.00 B2O3 0.68 P2O5 0.00
MgO 0.08 TiO2 0.00
CaO 0.69 Fe2O3 0.01

Alumina:Silica ratio is 1.00:14.72
Neutral:Acid ratio is 1.00:3.73
Alk:Neut:Acid ratio is 1.00:0.92:3.42

Expansion: 64.7 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Cone 4 Quintessence

EPK 20
Kaolin (Calc.) 20
Frit 3134 60
Total 100

Bentonite 2

Na2O 0.31 Al2O3 0.47 SiO2 2.46
K2O 0.00 B2O3 0.62 P2O5 0.00
MgO 0.01 TiO2 0.01
CaO 0.68 Fe2O3 0.01

Alumina:Silica ratio is 1.00:5.23
Neutral:Acid ratio is 1.00:2.28
Alk:Neut:Acid ratio is 1.00:1.09:2.47

Expansion: 77.4 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3