Engine tribology

© Fraunhofer IWM

Components in engines have ultra small wear speeds in the range of a few nanometers per hour under optimal break-in. Radio nuclide technology is used to analyze such systems, capturing this small wear rate in real time. Thus, it is possible to use the main leverage of tribological optimization - dynamics of break-in, additive chemistry, and energy controlled finishing. Besides a drastic reduction in friction and wear, the system is also stabilised, with a simultaneous reduction in sensitivity.

Publications

 

Böttcher, R.; Winkler, H.-J.; Dienwiebel, M.; Scherge, M., Tribology of wire arc spray coatings under the influence of regenerative fuels, Lubricants 6/3 Special Issue Applied Nanotechnology (2018) Art. 60, 9 Seiten Link

Liu, L.; Zhang, Z.; Dienwiebel, M., The running-in tribological behavior of Pb-free brass and its effect on microstructural evolution, Tribology Letters 65/4 (2017) Art.160, 9 Seiten Link