The widespread contamination of plastic materials has become a significant ecological concern, hindering progress toward sustainable development [1,2]. Plastic waste is widespread across various natural habitats, incl...The widespread contamination of plastic materials has become a significant ecological concern, hindering progress toward sustainable development [1,2]. Plastic waste is widespread across various natural habitats, including terrestrial and marine ecosystems[3,4]. Microplastics (MPs) primarily originate from the fragmentation of larger plastic pieces. Due to their small size, MPs are easily ingested by organisms and subsequently transferred through food webs, posing risks to human health [5,6].展开更多
Molybdenum dialkyldithiocarbamate(MoDTC)is widely used as a friction modifier in engine lubricating oil.Under MoDTC lubrication,the friction and wear behaviors of tungsten-doped diamond-like carbon(W-DLC)films anneale...Molybdenum dialkyldithiocarbamate(MoDTC)is widely used as a friction modifier in engine lubricating oil.Under MoDTC lubrication,the friction and wear behaviors of tungsten-doped diamond-like carbon(W-DLC)films annealed at 100-400℃were discussed and evaluated using scanning electron microscopy(SEM),atomic force microscopy(AFM),and Raman spectroscopy.Under(polymerized alpha olefin)PAO+MoDTC lubrication,the coefficient of friction of all samples decreased,but the wear rates of the W-DLC films annealed at 300℃increased significantly.By interacting with zinc dialkyldithiophosphate(ZDDP),the wear rates of W-DLC films annealed at different temperatures declined significantly owing to the formation of dense phosphate tribofilms on the worn surfaces.展开更多
基金supported by the National Natural Science Foundation of China (51908524)the Fundamental Research Funds for the Central Public-interest Scientific Institution (2022YSKY-34)。
文摘The widespread contamination of plastic materials has become a significant ecological concern, hindering progress toward sustainable development [1,2]. Plastic waste is widespread across various natural habitats, including terrestrial and marine ecosystems[3,4]. Microplastics (MPs) primarily originate from the fragmentation of larger plastic pieces. Due to their small size, MPs are easily ingested by organisms and subsequently transferred through food webs, posing risks to human health [5,6].
基金This research was financially supported by the National Natural Science Foundation of China(Nos.51875537 and 41872183)the Pre-Research Program in National 14th Five-Year Plan(No.61409230614)the Fundamental Research Funds for the Central University(No.2652018094).
文摘Molybdenum dialkyldithiocarbamate(MoDTC)is widely used as a friction modifier in engine lubricating oil.Under MoDTC lubrication,the friction and wear behaviors of tungsten-doped diamond-like carbon(W-DLC)films annealed at 100-400℃were discussed and evaluated using scanning electron microscopy(SEM),atomic force microscopy(AFM),and Raman spectroscopy.Under(polymerized alpha olefin)PAO+MoDTC lubrication,the coefficient of friction of all samples decreased,but the wear rates of the W-DLC films annealed at 300℃increased significantly.By interacting with zinc dialkyldithiophosphate(ZDDP),the wear rates of W-DLC films annealed at different temperatures declined significantly owing to the formation of dense phosphate tribofilms on the worn surfaces.
