These brown to buff pigments are modified versions of pseudobrookite, Fe2TiO5. As seen in Table 6.2, they are surprisingly classified as C. I. Pigment Black 12. They possess a range of shades similar to that obtained for the ZnFe and ZnTiFe spinels. There are at least two chemistries in products seen in the marketplace. One uses excess TiO2 and contains a rutile secondary phase. The other is an (Fe, Al)2TiO5 chemistry that partially substitutes Al for Fe, and usually has excess TiO2 also. The FeAlTi version is generally lighter and yellower.
Pseudobrookite Pigments
7 сентября, 2015 
Pokraskin 
Опубликовано в рубрике High Performance Pigments