CAJ | 학술논문

针对绿色植物油高温润滑性能差的问题，通过四球摩擦实验研究了层片状纳米粒子（纳米 WS2、纳米 MoS2和纳米石墨）在不同工况（温度、负载和速度）下对菜籽油润滑特性的影响。结果表明：层片状纳米粒子可有效提高菜籽油的极压性能和各工况下的抗磨减摩性能，可显著减轻高温下摩擦表面的磨损，改善磨损表面形貌，使磨损表面粗糙度降低75．5％～87．1％，从而延长菜籽油的服役寿命和摩擦副的使用寿命；其中纳米 WS2的改善效果最佳，可使最大无卡咬负荷和烧结载荷分别提高13．4％和66．7％，使菜籽油的磨斑直径和摩擦因数在常温（25℃）下分别减小25．8％和8．3％，在高温（250℃）下分别减小48．3％和21．9％，并且含纳米 WS2润滑油的抗磨减摩性能随温度、负载和速度的变化幅度最小，这主要缘于纳米 WS2具有比纳米石墨更高的金属表面吸附能力，并具有比纳米 MoS2更好的耐高温性能。
침대록색식물유고온윤활성능차적문제，통과사구마찰실험연구료층편상납미입자（납미 WS2、납미 MoS2화납미석묵）재불동공황（온도、부재화속도）하대채자유윤활특성적영향。결과표명：층편상납미입자가유효제고채자유적겁압성능화각공황하적항마감마성능，가현저감경고온하마찰표면적마손，개선마손표면형모，사마손표면조조도강저75．5％～87．1％，종이연장채자유적복역수명화마찰부적사용수명；기중납미 WS2적개선효과최가，가사최대무잡교부하화소결재하분별제고13．4％화66．7％，사채자유적마반직경화마찰인수재상온（25℃）하분별감소25．8％화8．3％，재고온（250℃）하분별감소48．3％화21．9％，병차함납미 WS2윤활유적항마감마성능수온도、부재화속도적변화폭도최소，저주요연우납미 WS2구유비납미석묵경고적금속표면흡부능력，병구유비납미 MoS2경호적내고온성능。
In view of the poor lubricating properties of green vegetable oil at high temperature,effects of nanometer flakes on lu-bricating properties of rapeseed oil under different working conditions were studied through four-ball friction experiments.The results show that nanometer flakes improve lubricating properties of rapeseed oil effectively and alleviate abrasion of friction sur-face,which reduces the surface roughness by 75.5%-87.1%.Thereinto,the improvement effect of nano-WS2 exceeds that of nano-MoS2 and nano-graphite,and nano-WS2 improves the maximum non-seizure load of rapeseed oil by 13.4% and weld load by 66.7%,and reduces the wear scar diameter and friction coefficient by 25.8%,8.3% at 25 ℃ and by 48.3%,21.9% at 250 ℃respectively.In addition,the variation of nano-WS2 oil’s lubricating properties with temperature,load,speed is the smallest.All of these result from the nano-WS2 ’s stronger adsorbability than nano-graphite and better thermostable performance than nano-MoS2 .