- 學位論文
尿素溶液中鈦配對之磨潤特性研究
A study on tribolohical characteristics of self-mated titanium pairs under carbamide lubrication.
摘要
本研究團隊過去已成功發展時磨擦帶電機制成為動態監控金屬薄膜磨潤特性的新方法，並且發現不管是就靈敏性或判別性之考量，上述此種新方法均優於傳統以磨擦係數監控的方式，但卻因導電特性之限制而只侷限在導體對導體材料之配對。 因此，本研究係進一步利用往復磨擦試驗機暨量測系統，動態同時量測磨擦界面之接觸電阻與磨擦係數對應於滑動距離之連續變化，以監控尿素溶液中鈦金屬配對之磨潤行為與化學反應物對接觸電阻與磨擦係數之影響，並量測磨耗損失量及以SEM觀察微奈米級材料轉移現象，且利用X光能譜散佈分析儀(Energy Dispersive Spectrometer, EDS)分析做為材料轉移之佐證。 本研究係針對尿素溶液中之實驗結果與純水中之情況作比較，這些動態監控的研究成果，將可提供未來生醫材料及相關磨潤工程研究之依據。
並列摘要
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 self-mated titanium pairs under carbamide 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. Besides, EDS was used to analyze and clarify the material transfer. Similarly, the experimental results under carbamide lubrication were compared with that under water lubrication. 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.