pdp1@EARTHLINK.NET on mon 12 apr 04
Glazes...
This thread had come up awhile back, and yesterday, while
looking for something else here in my Office, I came across
some formulae for
1930s Luminous Paints whose ingredients are processed in a
high heat..
I imagine these would have ready prospects for Glazes, with
the appropriate addition of one's additionally needed
ingredients for the
medium, and, with some impirical or other tests for their
post fired behaviour.
The recipes I found are -
1) "Lennord's" - One Hundred Parts, by weight, of Strontium
Carbonate; 106 parts, by weight, of Sulphur; 0.5 parts, by
weight, of Potassium Chloride; 0.5 parts, by weight, of
Sodium
Chloride; 0.4 parts by weight of Manganese Chloride. The
materials are heated to about 2,372 degrees F. for from
three-quarters of an hour to one hour. The product gives a
Violet Light.
2) "Mourel's" - One hundred parts, by weight, of Strontium
Carbonate; 30 parts, by weight, of Sulphur; 2 parts, by
weight, of Sodium Carbonate; 0.5 parts by weight of Sodium
Chloride; 0.2 parts by weight, of Manganese Sulphate. The
method of treatment is the same as for "Lennord's". The
product gives a deep Yellow Light.
3) "Vanino's" - Sixty parts, by weight, of Strontium
Thiosulphate; 12 parts by weight, of a 0.5 per cent
acidified alcoholic solution of Bismuth Nitrate; 6 parts, by
weight, of a 0.5 per cent alcoholic solution of Uranium
Nitrate. The
materials are mixed, dried, brought gradually to a
temperature of 2,372 degreed F., and heated for
about an hour. The phosphorescence is Emerald Green.
4) "Balmain's - Twenty parts by weight, of Calcium Oxide (
burnt Lime), free from Iron; 6 parts by weight of Sulphur; 2
parts by weight, of Starch; 1 part by weight, of a 0.5 per
cent solution of Bismuth Nitrate; 0.15 parts by weight, of
Potassium Chloride; 0.15 parts by weight, of Sodium
Chloride. The materials are mixed, dried and heated to 1,300
degrees C. or 2,372 degrees F. The product gives a Violet
Light.
To make these phosphorescent substances effective, they are
exposed for a time to direct Sunlight; or a Mercury Lamp may
be used. Powerful incandescent Gas Light also works well,
but requires more time.
(End quotes...)
Anyway, of course, should you be curious to experiment with
these or their like, please treat these materials with the
utmost
careful attentions, and make sure to observe particularly
prudent handleing
methods to keep them from your skin and to avoid breathing
dusts and so on. And, or, certainly do your own research
into the ways the individual ingredients prefer to be
respected.
Obtain and read their respective Material Safety Data sheets
and whatnot.
No non chelance with some of these bad boys and girls...
But curious possibilities for some classes of Work,
anyway...
Best wishes,
Phil
elveeee
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