Stephanie Wright on wed 24 jan 07
Hi Everybody,
Can anybody tell me please what the difference is between Ferro Frit 3134
and Ferro Frit 3195?
I have a glaze recipe I would like to try that uses both of these. It is a
copper red. However we only have the 3134 available. My teacher was not
sure, but he thought it would be probably be fine to just use the 3134,
upping the quantity to match the total the two combined frits would be.
Would this work? What are the main differences between the two?
Thanks!
Stephanie
Edouard Bastarache Inc. on thu 25 jan 07
Stephanie,
see for yourself :
3134 =
Na2O 10.3% B2O3 23.1% SiO2 46.5%
CaO 20.1%
Expansion: 93.4 x 10e-7 per degree C
Oxides causing abnormal expansion:
B2O3
----------------------------------------------------
3195 =
Na2O 6.0% Al2O3 12.4% SiO2 47.4%
CaO 11.2% B2O3 23.0%
Expansion: 71.5 x 10e-7 per degree C
Oxides causing abnormal expansion:
B2O3
Using your knowledge of glaze chemistry, rewrite
the recipe.
Later,.
Edouard Bastarache
Le Français Volant
The Flying Frenchman
Sorel-Tracy
Quebec
http://www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://perso.orange.fr/smart2000/livres.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/
| |
|
