配方类型:

INKS AND MARKING COMPOUNDS

配方说明:

Permanent Porcelain Marking Ink

配方组成:

Glycerin/5 or 6 drops
Litharge/2 g.
Potassium Carbonate/1 g.
Cobalt Nitrate Crystals/2 g.
Borax/1 g.

配制方法:

Dry the cobalt nitrate at 100'C. for 1 hour. Grind together the first four ingredients. Add the glycerin dropwise until the ink is of a suitable consistency to flow from a pen.
Using this ink, the desired markings are written lightly on the ceramic ware, which is then heated to redness for a minute or two over an oxidizing flame. On cooling, this gives a clear, permanent blue mark on the porcelain surface.