In ceramic production, the color strength of the glaze is a very important factor. It determines the color vividness and depth of the surface of ceramic products, and is one of the important criteria for evaluating the quality of ceramics.
The color strength of the glaze is mainly determined by the metal oxide content in the glaze and the proportion of the formulation. Different metal oxides, such as iron, cobalt, copper, etc., present different colors in the glaze, and a variety of different colors and shades can be modulated through different ratios. When preparing the glaze, it is necessary to accurately grasp the amount of various metal oxides to ensure the color strength and color stability of the glaze.
Secondly, the thickness of the glaze also affects the color development strength. In general, the thicker the glaze, the darker the color, but an excessively thick glaze layer may cause the color to darken or other color variations. Therefore, when making ceramics, it is necessary to adjust the thickness of the glaze layer according to the actual situation to achieve the best color effect.
Ordinary glazes are often unsatisfactory in terms of color strength, which is mainly due to the addition of too many zirconium, calcium, magnesium and other emulsion raw materials to the formula. Although these ingredients can provide some hiding power and emulsion, they have a significant negative impact on the color effect. In order to enhance the color effect, we need to adjust the amount of these ingredients appropriately.
In order to improve the color intensity, we can add some raw materials such as alumina, zinc oxide, barium carbonate and quartz to the glaze formula. These raw materials have a high refractive index and hiding power, which can effectively improve the color development effect of the glaze. At the same time, these raw materials can also improve other properties of the glaze, such as hardness, abrasion resistance and corrosion resistance.
In the process of adjusting the glaze formulation, we also need to pay attention to the interaction and coordination between the various raw materials. For example, the amount of alumina and zinc oxide needs to be adjusted appropriately to match parameters such as the melting temperature and viscosity of the glaze. The amount of barium carbonate and quartz added also needs to be finely adjusted according to the actual situation to achieve the best color effect.
In short, the color strength of glaze is one of the important criteria for evaluating the quality of ceramics. To achieve the ideal color development strength and color stability, it is necessary to grasp the formulation ratio, thickness, firing temperature and time of the glaze. At the same time, it is necessary to continue to practice, optimize and explore to discover more innovations and possibilities.