Dave Finkelnburg on thu 26 sep 02
Hi all!
If your eyes glaze over at technical questions, read no further. :-)
On the other hand, if you are a true glaze techy, can you tell me what the
coefficient of expansion is for Zirconium Oxide, the source of this
information and the units of the COE value?
I believe there is something in Lawrence and West, but I don't have
access to a copy.
Thanks in advance for any help on this.
Dave Finkelnburg, waiting impatiently (as usual!) for a cooling kiln
in Idaho
Linda Knapp on fri 27 sep 02
Digitalfire lists ZrO and ZrO2 as 0.02 (no units)
Hamer's Potter's Dictionary puts it down on the low end of the scale.
(No numbers just a relative listing.)
Hope that helps,
Linda
Dave Finkelnburg wrote:
>Hi all!
> If your eyes glaze over at technical questions, read no further. :-)
>On the other hand, if you are a true glaze techy, can you tell me what the
>coefficient of expansion is for Zirconium Oxide, the source of this
>information and the units of the COE value?
> I believe there is something in Lawrence and West, but I don't have
>access to a copy.
> Thanks in advance for any help on this.
> Dave Finkelnburg, waiting impatiently (as usual!) for a cooling kiln
>in Idaho
>
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>
David Hewitt on sat 28 sep 02
Dave,
If you would care to go to my web site and look under Pottery Techniques
/ Calculating Crazing you will see a selection of different coefficients
for ZrO2 together with their units and the source of the information.
http://www.dhpot.demon.co.uk
David
In message , Dave Finkelnburg writes
>Hi all!
> If your eyes glaze over at technical questions, read no further. :-)
>On the other hand, if you are a true glaze techy, can you tell me what th=
>e
>coefficient of expansion is for Zirconium Oxide, the source of this
>information and the units of the COE value?
> I believe there is something in Lawrence and West, but I don't have
>access to a copy.
> Thanks in advance for any help on this.
> Dave Finkelnburg, waiting impatiently (as usual!) for a cooling k=
>iln
>in Idaho
--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk
David Hendley on sat 28 sep 02
Dave, my info is from Ron Roy.
His table lists ZrO2 as 2.30.
I don't know what units this is measured in, but I don't care.
All I want to know is the relationship to other oxides.
To compare, here are some other values:
Na2O 41.60
CaO 16.30
Al2O3 1.40
SiO2 0.50
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com
----- Original Message -----
> can you tell me what the
> coefficient of expansion is for Zirconium Oxide, the source of this
> information and the units of the COE value?
> I believe there is something in Lawrence and West, but I don't have
> access to a copy.
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