| 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. |
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