Tom Buck on fri 23 jun 00
Linda H:
MZS is a fine white crystalline solid (structure: is cited as
MgO.ZrO2.SiO2 or MgZrSiO5). This material is an alternative to Zircopax
and Opax opacifiers, that is, brand-name zirconium silicate, ZrO2.SiO2.
(Ultrox, ZrO2, is used by some but it behaves differently, and its use can
be upsetting because results may be unexpected).
MZS has a density of 1.28 grams/millilitre whereas zirconium
silicate ("zircon") has a density of 4.68 g/mL. This says the MZS crystal
has an open lattice with air-spaces in it.
MZS is very stable; its melting point is 1700 oC (3090 oF). So, it
will stay crystalline as the glaze melt occurs at a lower temperature.
Because of its open structure, in some base glazes MZS could well lead to
satiny gloss (or satiny matt) surface.
I suggest you use at least 5% MZS in your test glaze, going up to
12% maximum. You might also consider adding 3-5% alumina hydrate
if you want a "rough" surface.
good tests. BFN. Peace. Tom B.
Tom Buck ) tel: 905-389-2339 (westend Lake Ontario,
province of Ontario, Canada). mailing address: 373 East 43rd Street,
Hamilton ON L8T 3E1 Canada
Linda Hughes on fri 23 jun 00
Hi All,
Will be testing glazes again soon and will be playing around with some
Magnesium Zirconium Silicate. I have not been able to find any info. Can
someone supply a chemical analysis and/or recommended percentages?
thanks in advance, Linda
Wade Blocker on fri 23 jun 00
Linda,
Magnesium zirconium silicate is an opacifier.This is the chemical
composition:
Zr02 Si02
53.6 27.5 Mg0-l7.4
According to James Chappell Zirconium oxide is used in commercially
prepared opacifier frits in combination with other compounds. Any
commerical opacifier or tin oxide will substitute. Therefore depending on
the degree of opacity you are looking for 5% or more could be added to a
glaze.
Mia in ABQ
Alisa and Claus Clausen on sat 24 jun 00
I use a material called zirkon nr. 5 that is (65%) ZrO2 (35%)SiO2=20
mol. 138
a very fine zircon silicate.
I use 15% to a transparent glaze. This gives a completely white =
covering glaze. The difference in using the above instead of tinoxyd is =
a much lower pris and the glazes with zircon silicate that are further =
colored with stains or oxides give just a stronger white color in the =
colored glazes that are opacified with tin oxide. Blending both tin =
xodide and zirkon silicate together to opacify works fine also, and you =
can play with how "hard" you want the white to be.
Best regards
Alisa in Denmark
LOGAN OPLINGER on mon 28 jan 02
Go to:
http://digitalfire.com/material/m-01j1w1.htm
for a definition of this material, and an analysis.
Also:
http://www.escribe.com/art/clay/m42637.html
--
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Linda R. Hughes on mon 28 jan 02
Hey All,
This subject was addressed in June and July of 2000. Tom Buck responded =
to a question by myself and another by "June". Found the answers again =
this morning in the archives. One is dated 24 June 2000, the other 27 =
Jul 2000. Fun hunting. Linda
Linda R. Hughes
mamahug@attbi.com
Cantello Studios on sun 5 may 02
I am looking for ( Magnesium Zirconium Silicate ) some of you old potters
out there
No offence mint I’m one of you. Any way in the late 60’s this was around and
even in the
Late 70’s I believe? Would any one have a stash out there they would like to
off load e-mail
Me off list at Cantello@2xtreme.net or if any
one would know the % analysis of the old stuff
I could make some I think?
Thank You Chris Cantello
____________________________________________________________________________
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may be reached at melpots@pclink.com.
John Britt on fri 17 dec 10
Anyone know of a source of Magnesium Zirconium Silicate?
I have a recipe that calls for it and thought I would give it a try.
TIA,
John Britt
www.johnbrittpottery.com
Vince Pitelka on fri 17 dec 10
John Britt wrote:
"Anyone know of a source of Magnesium Zirconium Silicate? I have a recipe
that calls for it and thought I would give it a try."
Hi John -
You is one of da glaze gurus, so I am not sure I should be telling you this=
,
but if locked in a zirconium glass melt, wouldn't the magnesia be irrelevan=
t
in terms of its role in a cone-10 glaze, and therefore, couldn't you just
substitute Zircopax?
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Tech University
vpitelka@dtccom.net; wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka
James Freeman on fri 17 dec 10
John...
It is, or at least was, manufactured by Tam Ceramics
(www.tamceramics.net), which I believe is now owned by Ferro. Perhaps
they can lead you to a distributor, who could then lead you to a
supplier.
Good luck with your search.
...James
James Freeman
"...outsider artists, caught in the bog of their own consciousness,
too preciously idiosyncratic to be taken seriously."
"All I say is by way of discourse, and nothing by way of advice.=3DA0 I
should not speak so boldly if it were my due to be believed."
-Michel de Montaigne
http://www.jamesfreemanstudio.com
http://www.flickr.com/photos/jamesfreemanstudio/
http://www.jamesfreemanstudio.com/resources
On Fri, Dec 17, 2010 at 3:59 PM, John Britt wr=
=3D
ote:
> Anyone know of a source of Magnesium Zirconium Silicate?
>
> I have a recipe that calls for it and thought I would give it a try.
>
> TIA,
>
> John Britt
> www.johnbrittpottery.com
>
L TURNER on fri 17 dec 10
Aardvark has a MSDS for Magnesium Zirconium Silicate
Use the manufacturer on that document to locate the supplier
Regards,
L. Turner,
The Woodlands, TX
On Fri, Dec 17, 2010 at 2:59 PM, John Britt wr=
ote:
> Anyone know of a source of Magnesium Zirconium Silicate?
>
> I have a recipe that calls for it and thought I would give it a try.
>
> TIA,
>
> John Britt
> www.johnbrittpottery.com
>
John Britt on sat 18 dec 10
Vince,
Well, obviously I'm not much of a glaze guru, as I don't know diddily abo=
=3D
ut=3D20
zirconium glass melts. I am more of a glaze enthusiast.=3D20
Either way, I know how to straight sub and I know how to use calculation =
=3D
to=3D20
sub but to the larger point, my belief is that people are smart and so so=
=3D
meone=3D20
had a recipe and used magnesium zirconium silicate for a reason. So I am =
=3D
trying=3D20
the recipe and wanted to try to test it with their material first. I am =
=3D
also of=3D20
the belief that the whole is greater than the sum of the parts so simply=3D=
20=3D
reducing magnesium zirconium silicate to magnesium carbonate and zircopax=
=3D
(or=3D20
zircon and silica) will not give you the same results as the original. (I=
=3D
would cite=3D20
the 1 dozen or more subs for gerstley borate as evidence.)
But I could be wrong. I like to test to see. But thanks to all the replie=
=3D
s.=3D20
None at Aardvark, Seattle Supply, but contacted TAM and US Pigment and am=
=3D
=3D20
waiting for their reply.
Thanks ya'll,
John Britt
www.johnbrittpottery.com
Des & Jan Howard on sat 18 dec 10
John
I try now & then, but haven't been able to track down a
source of Magnesium Zirconium Silicate.
No indications as to whether it is a natural substance
or a synthetic.
I'm playing with synthesis from my available materials.
That glaze interests me too.
Des
On 18/12/2010 7:59 AM, John Britt wrote:
> Anyone know of a source of Magnesium Zirconium Silicate?
> I have a recipe that calls for it and thought I would give it a try.
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
-32.656072 149.840624
June on sat 18 dec 10
John, try Seattle Pottery Supply. If you want a good amount I'd like to buy=
some from you.
http://www.seattlepotterysupply.com/Merchant2/merchant.mvc?Screen=3DCTGY&Ca=
tegory_Code=3DRMMR
Warmest regards,
June
http://www.etsy.com/shop/etsy.com
http://wwww.shambhalapottery.blogspot.com
http://groups.yahoo.com/group/sodasaltfiring/
http://www.shambhalapottery.com
----- Original Message -----
From: John Britt
To: Clayart@LSV.CERAMICS.ORG
Sent: Fri, 17 Dec 2010 20:59:04 -0000 (UTC)
Subject: Magnesium zirconium silicate
Anyone know of a source of Magnesium Zirconium Silicate?
I have a recipe that calls for it and thought I would give it a try.
TIA,
John Britt
www.johnbrittpottery.com
June on sun 19 dec 10
John,
I ran the original recipe through my Insight glaze program and reformulated=
it with Zircopax, etc, gave the recipe to Clayart friend, Veena who tried =
it and reported it was too dry at cone 10. Of course, one person, doing one=
test batch and firing may not be conclusive; but it may be that the engine=
ered mixture that makes up magnesium zirconium silicate aids an easier melt=
.
Warm regards,
June
http://www.etsy.com/shop/juneperry
http://wwww.shambhalapottery.blogspot.com
http://groups.yahoo.com/group/sodasaltfiring/
http://www.shambhalapottery.com
----- Original Message -----
From: John Britt
To: Clayart@LSV.CERAMICS.ORG
Sent: Sat, 18 Dec 2010 18:01:17 -0000 (UTC)
Subject: Re: Magnesium zirconium silicate
Vince,
Well, obviously I'm not much of a glaze guru, as I don't know diddily about
zirconium glass melts. I am more of a glaze enthusiast.
Either way, I know how to straight sub and I know how to use calculation to
sub but to the larger point, my belief is that people are smart and so some=
one
had a recipe and used magnesium zirconium silicate for a reason. So I am tr=
ying
the recipe and wanted to try to test it with their material first. I am al=
so of
the belief that the whole is greater than the sum of the parts so simply
reducing magnesium zirconium silicate to magnesium carbonate and zircopax (=
or
zircon and silica) will not give you the same results as the original. (I w=
ould cite
the 1 dozen or more subs for gerstley borate as evidence.)
But I could be wrong. I like to test to see. But thanks to all the replies.
None at Aardvark, Seattle Supply, but contacted TAM and US Pigment and am
waiting for their reply.
Thanks ya'll,
John Britt
www.johnbrittpottery.com
James Freeman on sun 19 dec 10
On Sun, Dec 19, 2010 at 8:03 AM, June wrote:
> John,
>
> I ran the original recipe through my Insight glaze program and reformulat=
=3D
ed it with Zircopax, etc, gave the recipe to Clayart friend, Veena who trie=
=3D
d it and reported it was too dry at cone 10. Of course, one person, doing o=
=3D
ne test batch and firing may not be conclusive; but it may be that the engi=
=3D
neered mixture that makes up magnesium zirconium silicate aids an easier me=
=3D
lt.
June...
I think you are exactly right. Here is something I sent to John off
list, speculating the same thing:
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D
Zirconium silicate (Zircopax) is extremely refractory so does not
enter the glaze melt, and instead just floats about in the melt, which
is why it opacifies (as you already know). I am guessing that
magnesium zirconium silicate could possibly enter the melt if the
integrated magnesium could flux the mix sufficiently. Why else would
they make the stuff? I will further guess that the stuff was
originally meant to be melted and spun into refractory fiber, as I
know there is, or was, both magnesium zirconium silicate and calcium
magnesium zirconium silicate fiber board on the market. If I am
right, then it was probably a frit-like material intended as a
feedstock, with the magnesium melted in at temperatures sufficient to
melt the zirconium [and silica], which temperatures would be far in
excess of what
our feeble little kilns reach. Probably done in an electric arc
furnace. All just speculation on my part.
Good luck with your quest!
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D
All the best.
...James
James Freeman
"...outsider artists, caught in the bog of their own consciousness,
too preciously idiosyncratic to be taken seriously."
"All I say is by way of discourse, and nothing by way of advice.=3DA0 I
should not speak so boldly if it were my due to be believed."
-Michel de Montaigne
http://www.jamesfreemanstudio.com
http://www.flickr.com/photos/jamesfreemanstudio/
http://www.jamesfreemanstudio.com/resources
Edouard Bastarache on sun 19 dec 10
Add Lithium Carbonate by small increases,
and see what happens.
You may add up to 5% Lithium Carbonate.
Glazes containing Lithium and Zirconium
compounds are usally beautiful whites in
my experience.
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://blogsalbertbastarache.blogspot.com/
http://cerampeintures.blogspot.com/
http://www.facebook.com/edouard.bastarache
Nils Lou on wed 22 dec 10
I recall someone looking for MZS and remembered
I have about 20 #'s. It's $6.00/lb plus shipping.
Write off list if interested.
nils lou, professor of art
http://nilslou.blogspot.com
www.tinyurl.com/bpc5nm
503.883.2274
"Play is the essence of creativity", and
"What is not brought forward into consciousness....
we later call Fate", Carl Jung
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