| Summary: | 碩士 === 崑山科技大學 === 機械工程研究所 === 96 === The tribo-electrification mechanisms had been successfully applied to monitor the tribological properties between the metal films by our laboratory members. Moreover, the novel method of using continuous tribo-electrification variations for monitoring the tribological properties between the soft metal films is more “sensitive” and “discriminative” than that by the continuous friction coefficient variations as usual. However, the above novel method is only suitable for the conducted materials.
Therefore, this study is based on the above results to further develop another novel method for dynamic monitoring the tribological properties and chemical reactions by measuring the continuous variations of electrical contact resistance and friction coefficient between the metal pairs under water lubrication. 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.
There were three objects in this study as followings: Firstly, the wear behavior of the Cu/Zn pair at different normal loads and sliding speeds are dynamic monitoring by measuring the continuous variations of electrical contact resistance and friction coefficient under water lubrication. Moreover, the results were compared with that under air lubrication (dry friction). Secondly, the wear behavior of the Zn/Cu pair at different normal loads and sliding speeds are dynamic monitoring by measuring the continuous variations of electrical contact resistance and friction coefficient under water lubrication. Moreover, the results were compared with that under dry friction. Thirdly, the tribological properties of the Ti/Ti pair at different normal loads and sliding speeds are dynamic monitoring by measuring the continuous variations of electrical contact resistance and friction coefficient under water lubrication. Similarly, the results were compared with that under dry friction 【43】. All of the above results will be very helpful for the study of the water lubrication engineering and the biomaterial engineering in the future.
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