jeudi 13 octobre 2011

Cone 4 #27 Glacée/Opaque

Custer feldspar 36
Silica 20
Frit 3134 10
Gerstley borate 10
Zinc oxide (Calc.) 9
Barium carbonate 8
Talc 7
Total 100

Bentonite 2

Na2O 0.11 Al2O3 0.17 SiO2 2.41
K2O 0.10 B2O3 0.20 TiO2 0.00
MgO 0.16 Fe2O3 0.00
CaO 0.23
MnO 0.00
ZnO 0.29
BaO 0.11

Alumina:Silica ratio is 1.00: 14.00
Neutral:Acid ratio is 1.00:6.57
Alk:Neut:Acid ratio is 1.00:0.37:2.41

Expansion: 75.0 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

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