Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
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Effect of Lattice Defects on Tribological Behavior for High Friction Coefficient under TCP added PAO Lubrication in Nanostructured Steels
Kazuki TonotsukaYoshikazu TodakaNozomu AdachiMotohiro HoriiKenichi TodaMasatoshi MitsuharaMasumi IwasakiYoshinori ShiiharaYoshitaka UmenoMinoru NishidaHideharu Nakashima
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2019 Volume 105 Issue 2 Pages 282-289

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Abstract

The effect of lattice defects on the tribological behavior for high friction coefficient under tricresyl phosphate (TCP) added poly-α-olefin (PAO) lubrication was investigated in the nanostructured steels produced by heavy plastic deformation processes. In the surface-nanostructured SUJ2 bearing steel, the tribological behavior with high friction coefficient was observed in the ball-on-disk tests in comparison with the non-deformed steel. In addition, the similar phenomenon was observed in the ultra-low carbon (ULC) steel with high-density of lattice defects (grain boundary, dislocation and so on). By increasing the density of lattice defects, higher friction coefficient was shown. The reason of the tribological behavior with high friction coefficient seems that the compound film of Fe-O-P system formed in the ball-on-disk test was worn.

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© 2019 The Iron and Steel Institute of Japan
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