What chemicals are present in a fired glaze?

 Unit 1 Topic 9
Glaze Basics
A fired glaze (glass) consists of a complex structure (matrix) of a number of oxides.
Each glaze oxide can be classified in terms of the role it plays in the melt i.e. flux, stiffener, or glass former.

Some oxides commonly found in glazes are:-
Flux

K2O
Na2O
Li2O
CaO
MgO
BaO
ZnO
PbO
SrO

potassium oxide
sodium oxide
lithium oxide
calcium oxide
magnesium oxide
barium oxide
zinc oxide
lead oxide
strontium oxide
Stabiliser

Al2O3

 aluminium oxide

Glass Former

SiO2

 Silicon oxide

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