| Summary: | 碩士 === 崑山科技大學 === 機械工程研究所 === 97 === The continuous variations of electrical contact resistance had been successfully applied to monitor the tribological properties and the wear mechanisms of self-mated titanium under pure water lubrication by our laboratory members. Moreover, the novel method of using continuous variations of electrical contact resistance for monitoring the tribological properties is more sensitive and discriminative than that by the continuous friction coefficient variations as usual.
Therefore, this study is based on the above results to study the effects of Al2O3 particle on the tribological characteristics of self-mated titanium under water lubrication by measuring the continuous variations of electrical contact resistance and friction coefficient. The experiment was conducted by the self-developed friction tester and its measure system. Moreover, the wear loss was measured by an accuracy balance and the SEM was used to observe the micro structures of material transfer.
This study can be divided into four parts: firstly, the tribological characteristics of self-mated titanium under different normal loads were investigated and compared with that under pure water lubrication. Secondly, the tribological characteristics of self-mated titanium under different sliding speeds were investigated and compared with that under pure water lubrication. Thirdly, the effects of Al2O3 particle concentration were studied. Finally, the effects of Al2O3 particle size distribution were also investigated. All of the above dynamic monitoring results will be very helpful for the study of the related tribology engineering and the biomaterial materials in the future.
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