ivor and olive lewis on tue 3 jul 12
A couple of weeks ago Robert Harris asked about Line blends and then posed
this secondary question....potential change for each ion ?>
My response was "This question can be answered, making one or two
assumptions along the way, by calculating the ionic charge per unit area fo=
r
each of the ions you are investigating."
Below is a ranked table of viscosity values based on Ionic radius and Ion
charge.
Boron seems have be anomalous to me but Boric Oxide it can be regarded as a
glass maker not a flux.. In the melt Silicon Dioxide are immiscible.
Regards,
Ivor Lewis,
REDHILL,
South Australia
Relationship between Ionic Charge and Ionic Surface Area and the Influence
of these Properties on Glaze Viscosity
Element Ion Charge + Charge =CE=94P /sq pm
Viscosity
Boric ion 3
8.29 e -4 High viscosity
Aluminium ion 3
7.85 e -5
Magnesium ion 2
4.73 e -5
Zinc ion 2
4.42 e -5
Lithium ion 1
2.29 e -5
Calcium ion 2
1.59 e -5
Strontium ion 2
1.18 e -5
Barium ion 2
0.86 e -5
Sodium ion 1
0.76 e -5
Potassium ion 1
0.43 e -5 Low viscosity
Data from G.W.C Kaye and T. H. Laby. =E2=80=9CTables of Chemical and Physi=
cal
Constants=E2=80=9D. 14 th Edition,. Longmans. 1982. ISBN 0-582-46326-2
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