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Published in:
01-10-2006
Tribological properties of nematic and smectic liquid crystalline mixtures used as lubricants
Published in: Tribology Letters | Issue 1/2006
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Abstract
The paper presents the description and analysis of the results obtained in the investigation performed on disc—ball tribotester T-11. Samples of 100Cr6 (European) steel were tested, while as a lubricant, liquid crystalline mixtures in nematic as well as smectic A, B and E phases were used. The friction force and the wear of sample and counter-sample were measured. The analysis of values of friction coefficients has shown that the friction coefficient of liquid crystalline mixtures is lower than that of paraffin oil. Nematic mixtures have a low friction coefficient under a load of 50 N and smectic B mixtures have low friction coefficient under 20 N, 30 N and 40 N load.