Physics:Rehbinder effect

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Short description: Physical effect of surfactants on materials

The Rehbinder effect in physics is the reduction in the hardness and ductility of a material, particularly metals, by a surfactant film.[1]

A proposed explanation for this effect is the disruption of surface oxide films, and the reduction of surface energy by surfactants.[2][3]

The effect is of particular importance in machining, as lubricants reduce cutting forces.[3][4]

References

  1. Andrade, E. N. D. C.; Randall, R. F. Y.; Makin, M. J. (1950). "The Rehbinder Effect". Proceedings of the Physical Society, Section B 63 (12): 990. doi:10.1088/0370-1301/63/12/304. Bibcode1950PPSB...63..990A. 
  2. Andrade, E N da C; Randall, R F Y; Makin, M J (1950). "Proceedings of the Physical Society. Section B The Rehbinder Effect". Proceedings of the Physical Society. Section B 63: 990. doi:10.1088/0370-1301/63/12/304. https://iopscience.iop.org/article/10.1088/0370-1301/63/12/304/meta. 
  3. 3.0 3.1 Chaudhari, Akshay; Soh, Zhi Yuan; Wang, Hao; Kumar, A. Senthil (2018). "Rehbinder effect in ultraprecision machining of ductile materials". International Journal of Machine Tools and Manufacture 133: 47-60. doi:10.1016/j.ijmachtools.2018.05.009. https://www.sciencedirect.com/science/article/pii/S0890695518301214. 
  4. Lee, Yan Jin; Wang, Hao (July 2020). "Current understanding of surface effects in microcutting". Materials & Design 192: 108688. doi:10.1016/j.matdes.2020.108688. 

Further reading