Study on Friction and Wear of Ceramics and Titanium Alloy under Nano-Al2O3 Water Mist Jet
Nanofluids have been widely used in lubrication and friction reduction due to their excellent performance.However,there is relatively little research on the frictional study of nanoscale particle water mist jets.In this study,the fric-tion and wear of ceramics and titanium alloys under the lubrication of nanoscale particle water mist jets are investigated.Four different concentrations(0.10%,0.25%,0.50%,and 0.75%)of nanoscale Al2O3 aqueous solution are prepared.A comparative experiment on the friction and wear of nanoscale particle water mist jets is conducted at two different linear speeds.The friction coefficient,wear area,and wear morphology are tested and compared.Furthermore,the mechanism of friction and wear is discussed.The experimental results showed that the 0.50%nanoscale Al2O3 water mist jet exhibited the best friction reduction and lubrication performance.Compared to dry friction,the friction coefficient under the 0.50%nanoscale Al2O3 water mist jet decreased by 87.68%and 82.81%at two different linear speeds(10m/min and 45m/min),respectively.Under the nanoscale particle water mist jet,the wear forms of zirconia ceramics and titanium alloys are mainly abrasive wear caused by abrasive particles.The bearing-like and protective film effects of nanoscale Al2O3 are the main reasons for reducing friction and wear.Excessive nanoscale particles were prone to aggregation,leading to increased abrasive wear and micro-flaking.
nano-Al2O3water mist jetceramicstitanium alloyfriction and wear
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