January 28, 2010

Volume 6 Issue 5, Pages 642 – 650

Satoshi Kitaoka, Kazumi Kashiwagi, Masashi Wada, Takenobu Sakai
Published
Online: Nov 5 2008 3:06PM

DOI: 10.1111/j.1744-7402.2008.02306.x

ABSTRACT
The effects of sulfur (dibenzothiophene) and a lubricity improver
(glyceride) on the tribological behavior of combinations of Si3N4
ceramics and steel were investigated in kerosene at 373 K. The tests
were performed by sliding the circumferential surface of a rotating disk
with two plates. Lubricity was not improved by the addition of
glyceride for the combination of the different materials. The oxidation
wear of the Si3N4 was
considered to have occurred by a trace amount of water as an impurity in
the kerosene. The steel plate was mainly removed by mechanical wear,
which was accelerated by increasing the sulfur concentration.

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