Bismuth vanadate pigments
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Gerhard Pfaff
Abstract
Bismuth vanadate pigments belong to the most important inorganic yellow pigments since their market introduction in the 1970s. They have substituted the greenish yellow lead chromate and cadmium sulfide pigments in a considerable number of applications. Bismuth vanadate pigments are based on bismuth vanadate with monoclinic or tetragonal structure. Their composition ranges from pure BiVO4 up to the mixed pigment 4BiVO4▪3Bi2MoO6, where molybdenum is incorporated in the structure. Bismuth vanadate pigments are characterized by excellent optical and application characteristics in particular regarding brightness of shade, hiding power, tinting strength, weather fastness, and chemical resistance.
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