Bingham flow
Many @C01172@ dispersions show Bingham flow which is characterized by a σ-D diagram as shown. At rates of shear greater than that at point A, the following relation applies: \[\sigma - \sigma _{\text{B}}=\eta _{\Delta }\ D\] where \(\sigma _{\text{B}}\) (or \(\tau _{\text{B}}\)) is called the Bingham @Y06727@, \(\eta _{\Delta }\) is the @D01710@, \(D\) is the @S05636@, and \(\sigma \) is the average of three @N04216@ components if the deformation is purely dilatational.
PAC, 1979, 51, 1213. (Terminology and Symbols in Colloid and Surface Chemistry Part 1.13. Definitions, Terminology and Symbols for Rheological Properties) on page 1217 [Terms] [Paper]