Factors that cause different colors of iron oxide pigments
The factors that lead to different colors of iron oxide pigments are as follows: Size and shape of iron oxide particles: The size and shape of the particles affects the pigment’s ability to scatter and absorb light, which in turn affects the pigment’s color. The lattice structure and substituted ions of iron oxide crystals: The lattice structure and substituted ions of iron oxide crystals will affect the light absorption characteristics of the pigment, thereby affecting the color. Pigment preparation and treatment process: Temperature, pressure, pH value and other factors during the preparation and treatment process will affect the color of iron oxide pigments. The microstructure and molecular arrangement of pigments: The microstructure and molecular arrangement of pigments have a significant impact on their properties of absorbing and scattering light, which in turn affects color. Additives and Impurities: Additives and impurities in pigments may react with iron oxide, changing the color of the pigment. To sum up, the reasons for the different colors of iron oxide pigments are affected by many factors, including particle size and shape, crystal structure and substituted ions, preparation and processing processes, microstructure and molecular arrangement, as well as additives and impurities.