Khaimraj Seepersad on thu 14 jun 01
Hello Folks ,
just curious , would a 0% Al203 , but x % Ti02 , high silica
glaze be usable here ?
Salt cuts through Aluminium down here with sea blast .
I wonder if the fluxing quality of Ti02 could be brought in
with Sr0 or Ca0 and Mg0 at over cone 6.
I would imagine the combination of salt and vinegar would
be doubly vicious ?
Perhaps a Sr0/Ca0/Mg0/ 15+%Ti02/ 70+%Si02 glaze ?
[ do we discount the % Ba0 , in the Sr0 ? ]
Would a tiny % of B203 [ as in lab pyrex ] work here ?
Perhaps not a hardwearing glaze [ say 5.5 to 6.0 Mohrs ]
but chemically durable ?
It is just a pickling jar , not a plate for use with cutlery ?
Anyone ?
Khaimraj
-----Original Message-----
From: Paul Lewing
To: CLAYART@LSV.CERAMICS.ORG
Date: 13 June 2001 16:36
Subject: Re: Glaze for pickling crock
>Wesley C. Rolley wrote:
> Am I correct that any good
>> high-silica clear that fits my stoneware body is going to be OK?
>
>You're on the right track here, Wes. You do want high SiO2, but you
>also want high Al2O3. This will result in a very hard glaze, fairly
>certain to be food-safe, especially if it's uncolored, and probably will
>be a decent fit as well. But don't just go by the recipe. Make sure
>you have enough of those two oxides on a molecular analysis basis. I'd
>try to get more than 0.3 moles of Al2O3 and more than 3.0 moles of SiO2.
>Good luck,
>Paul Lewing, Seattle
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