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Abstract: The
tribological behavior of T8 steel pin sliding against Al2O3 ceramics
disc is investigated with a Falex test rig under a compound additive
T451＋T306. The scanning electrion microscope(SEM) is used to examine the
wear condition of the T8 steel pin, and the Auger electron
spectroscopy(AES) to detect the chemical constitution of the wear zone.
The results show that compound additive reveals excellent synergistic
effect. With the content of T451 increased, the tribological properties
of the compound is better, and with the content of T306 increased, the
tribological properties is worse. In the experimental results, the most
effective percent found for weight rate is: 2%T451＋1%T306. The AES
spectra of typical elements shows that the synergistic effect while
compounding T451 with T306 is mainly because that the thick
phosphorus-rich layer is formed on the worn surface of T8 steel pin. The
wear pattern of the T8 steel pin / Al2O3 ceramics disc under the
compound is attrition wear and tribochemical (corrosion) wear.
Key words: T8
steel Al2O3 ceramics Tribological behavior Antifriction agent
Antiwear additive Synergistic effect
CLC No: TQ174
国家自然科学基金(50175013)和清华大学摩擦学国家重点实验室开放基金(SKLT98—3、SKLT00—5)资助项目.
Received 30128, received in revised form 20031103
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