| Summary: | 碩士 === 國立虎尾科技大學 === 機械設計工程研究所 === 99 === The main purpose of this study is the use of nano-gold, nano-carbon ball and nano-molybdenum lubricant additive in order to understand its anti-scuffing performance. uses multi-function tribological tester apparatus including by the pure sliding design of Block-on-ring experiment and constant or variable slide to roll design Two-roller test, separately in the different pure sliding speed, the different surface roughness and different slide-roll ratio, measuring the scuffing load, contact temperature, resistance and vibration frequency signals by full understanding anti-scuffing lubricant lubrication mechanism at different nano-additives, and observes lubricating oil of the nanometer additive contact characteristic by the bubble experiment. The experimental results show that although the nano-gold and nano carbon ball contact angle of lubricant additives are similar, but the anti-scuffing performance of nano-chemical effects are significant differences, nano-Molybdenum additives significantly larger than the contact angle of nano-gold and nano carbon ball, and found that the tendency to spread more slowly shows the characteristics of high viscosity, can be effectively coated the surface of the specimen. Next, nano-gold and molybdenum compared to nano-carbon ball additives obviously has a good anti-scuffing lubricant performance, In the scuffing test, constant slide to roll transmission occur sizer more quickly variable slide to roll lubrication phenomena. Finally, the scuffing surface that take place during wear were characterized by using scanning electron microscopy and EDS
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