【Third Firing Pigments (Overglaze Colors)】

The third firing process, also known as overglaze firing or low-temperature decoration firing, is used to create richer and more refined color effects on ceramics. The pigments applied at this stage are called overglaze colors (third firing colors), and they have the following characteristics:

1. Low-Temperature Development

The third firing is typically carried out at 750°C–900°C, so the pigments must develop their color at low temperatures without distortion from high heat.

2. Brilliant and Stable Colors

Overglaze colors are usually composed of oxides, enamel pigments, or color powders containing metallic oxides. They can achieve vivid hues such as gold, silver, red, blue, and green, with fine details and long-lasting stability.

3. Fusion with the Glaze Surface

Once applied on top of the glaze and fired at low temperature, the pigments fuse with the glaze layer, resulting in a glossy finish with enhanced depth and brilliance.

4. Wide Applications

Commonly used in fine tableware, teaware, vases, and art ceramics, these pigments allow for effects such as gold and silver luster, gemstone-like colors, and even embossed or transfer printing designs.