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: sodium/potassium chloride in glass/glazes

updated thu 18 jan 07

 

Ivor and Olive Lewis on wed 17 jan 07


Dear Edouard,

Would help if you were to give the complete Citation for this highly =
suspect information...

<<...potassium and sodium chlorides are accelerators of fusion. They =
lower the melting point of calcium carbonate, of sodium carbonate inter =
alia, by creating eutectics, which accelerates the fusion of the whole =
of a composition which contains these materials.... The chlorides start =
to decompose at 850=B0C and are definitively decomposed at 1400=B0C,
therefore no more chlorine trace then in the end product.>>

....because I would like to know where this knowledge came from and what =
experimental investigations validate these statements as facts. Do you =
believe it ? Best regards,

Ivor Lewis.
Redhill,
South Australia.

Edouard Bastarache Inc. on wed 17 jan 07


Ivor,

if you wish I can send you privately
the scanned text.


Later,




Edouard Bastarache
Le Français Volant
The Flying Frenchman

Sorel-Tracy
Quebec
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://perso.wanadoo.fr/smart2000/index.htm
http://www.pshcanada.com/Toxicology.htm
www.thepottersshop.blogspot.com
http://www.ceramique.com/cerambooks/rayons/technologie.php
http://www.flickr.com/photos/30058682@N00/





----- Original Message -----
From: "Ivor and Olive Lewis"

To:
Sent: Tuesday, January 16, 2007 8:23 PM
Subject: : Sodium/Potassium Chloride in
glass/glazes


Dear Edouard,

Would help if you were to give the complete
Citation for this highly suspect information...

<<...potassium and sodium chlorides are
accelerators of fusion. They lower the melting
point of calcium carbonate, of sodium carbonate
inter alia, by creating eutectics, which
accelerates the fusion of the whole of a
composition which contains these materials.... The
chlorides start to decompose at 850°C and are
definitively decomposed at 1400°C,
therefore no more chlorine trace then in the end
product.>>

....because I would like to know where this
knowledge came from and what experimental
investigations validate these statements as facts.
Do you believe it ? Best regards,

Ivor Lewis.
Redhill,
South Australia.

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