Marc Kiessling on fri 17 oct 97
Greetings:
Has anyone used the ingredient molybdenum in a glaze recipe before.
If so, which form (pure metal,disulfide or trioxide) should I use.
I have seen the results in books relating to crystalline glazes but have
not tried using it yet. I understand that it is very expensive. Anyone
know how much, and where do you get it from. Thanks.
Regards,
Marc (Vancouver, B.C.)
Karl P. Platt on sat 18 oct 97
Moly can be added to glaze as the disulfide or the tri-oxide. The metal
oxidixes real fast (be careful) above 800 F. The
tri-oxide is most commonly used in ceramics/glasses. The effect of
MoO3 is to lower surface
tension dramatically. This can have a number of applications -- promoting
development of crystals in crystalline glazes would be one. Tungsten oxide
offers similar effects.
I think East Bay Clay in Richmond, CA has some MoO3 and I think their
number is 510.233.0880 (?) Speak to Jim. Beyond that you could always
contact Molycorp -- guess what they sell?
What are you doing with Moly?
Regards,
KPP
Matthew Benacquista on sat 18 oct 97
I used Molybdenum in crystalline glazes 25 years ago. I really enhanced some
effects. I got it from the chemsitry dept. in a baby food jar at SIU Carbondale.
Marcia in Montana
Marc Kiessling wrote:
>
> ----------------------------Original message----------------------------
> Greetings:
> Has anyone used the ingredient molybdenum in a glaze recipe before.
> If so, which form (pure metal,disulfide or trioxide) should I use.
> I have seen the results in books relating to crystalline glazes but have
> not tried using it yet. I understand that it is very expensive. Anyone
> know how much, and where do you get it from. Thanks.
> Regards,
> Marc (Vancouver, B.C.)
--
Matt Benacquista
mjbmls@imt.net
http://www.imt.net/~mjbmls
Rick Sherman on sat 18 oct 97
------------------------original message------------------------------
Greetings:
Has anyone used the ingredient molybdenum in a glaze recipe before.
If so, which form (pure metal,disulfide or trioxide) should I use.
I have seen the results in books relating to crystalline glazes but
have not tried using it yet. I understand that it is very expensive.
Anyone know how much, and where do you get it from. Thanks.
Regards,
Marc (Vancouver, B.C.)
-----------------------reply------------------------------------------
Yes, I tested Molybdenum way back when. Used Melydbic Oxide (MoO3). It
pruduces wonderful gold/tan crystals on a blue/gray background - almost
silvery. I worked at ^ 8 and ^9. It can also offer an iridescent
quality to crystals as well as lusters. At school, we got it from
chemical supply houses.
It is not easy to get crytals. You have to experiment a lot. Try no
more than 4% and experiment in combination with Titanium. It does best
when pieces glaze with it are placed close together. It fumes or melts
early in the firing but remains with the glaze.
I have also added it to stoneware glazes and gotten a silvery-white
matt. Don't know what it costs now. If you try it, let us know how it
comes out.
RS
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