Edouard Bastarache on wed 3 jan 01
Bernd Pfannkuche is an international
ceramics consultant residing in Germany.
He also has authored 2 books already:
=93Ceramics and Earths/Keramik und Erden-Dictionary/W=F6rterbuch=94
and =93 Handbuch der Keramikbrenn=F6fen=94.
Here is his opinion on saltglaze wares.
Dans / In "La Belle Province"
CERAMICS CONSULT INT.GMBH / GERMANY
Best wishes for the New Year and Good Luck with all your activities
Maybe it's a new-year-joke that saltglaze is not appropriate for functio=
I never heard about any problems. In the Westerwald, the heart of the
production in this country, since hundrets of years until today they
you can buy saltglazed dinnerwares. For a long time this technique was u=
glaze drainage pipes as well as equipment and containers for the chemica=
industry, so far areas where a high durability against abrasion or chemi=
attack is requested.
But to make sure we are talking about the same thing:
Saltglaze is a glaze which is created by the SIO2 and Al2O3 of the clay
and the votalized Na-content of the salt (NaCl) which is introduced in t=
chamber between 1220dg and 1300dgC. So, saltglaze is always combined wit=
creation of a stoneware body and so far also restricted in the
colourfulness. But not all stoneware clays are suitable, the clay should=
in the SiO2 content.
There was a lot of reserches especially in artistic circles to bring dow=
firing temperature and/or to add more colourfull aspects. Results from
researches you can also call "saltglazes", but the durability of those
are surely in relation to the particular components and the firing