论文部分内容阅读
通过系列耐燃油及摩擦学性能试验设计,模拟固体膜润滑剂在发动机燃油系统中的实际应用条件,对比研究满足MIL-PRF-46010标准的固体膜润滑剂(牌号A)、航空通用高温固体膜润滑剂(牌号B)以及航天用中温固体膜润滑剂(牌号C)在燃油系统中的耐燃油及摩擦磨损性能。结果表明:喷气燃料对A型固体膜润滑剂的影响不大,喷气燃料浸泡前后A型固体膜润滑剂的平均摩擦因数均在0.02~0.05范围内,耐磨寿命均在1 h以上;A型固体膜润滑剂与喷气燃料长期接触不会影响喷气燃料的性能;A型固体膜润滑剂材料不论是在承载能力、耐磨寿命还是耐燃油性能方面都明显优于B型及C型固体膜润滑剂,这是因为A型固体膜润滑剂中的MoS_2和Sb_2O_3起到了协同抗磨作用。
Through the series of fuel-resistant and tribological performance test designs, the practical application conditions of the solid film lubricant in engine fuel system were simulated. The comparison of MIL-PRF-46010 solid film lubricant (Grade A), aerospace high temperature solid film Lubricant (Grade B), and Medium Temperature Solid Film Lubricant for Aerospace (Grade C) in fuel systems for fuel and friction and wear properties. The results show that jet fuel has little effect on type A solid film lubricant. The average friction coefficient of type A solid film lubricant before and after jet fuel immersion is in the range of 0.02-0.05, and the wear life is above 1 h. Type A The long-term contact between the solid film lubricant and the jet fuel will not affect the performance of the jet fuel. The A-type solid film lubricant material is obviously better than the B type and C type solid film lubricants in bearing capacity, wear life and fuel oil resistance Agent, which is because the A-type solid film lubricant MoS_2 and Sb_2O_3 play a synergistic anti-wear effect.