ISSN   1004-0595

CN  62-1095/O4

高级检索
润滑油及减摩剂的氧化解聚对缸套/活塞环摩擦学特性的影响[J]. 摩擦学学报, 2001, 21(5): 354-357.
引用本文: 润滑油及减摩剂的氧化解聚对缸套/活塞环摩擦学特性的影响[J]. 摩擦学学报, 2001, 21(5): 354-357.
Influence of Oxidative Degradation of Lubricant and Anti-Friction Modifier on Tribological Behavior of Cylinder Liner/Piston Ring[J]. TRIBOLOGY, 2001, 21(5): 354-357.
Citation: Influence of Oxidative Degradation of Lubricant and Anti-Friction Modifier on Tribological Behavior of Cylinder Liner/Piston Ring[J]. TRIBOLOGY, 2001, 21(5): 354-357.

润滑油及减摩剂的氧化解聚对缸套/活塞环摩擦学特性的影响

Influence of Oxidative Degradation of Lubricant and Anti-Friction Modifier on Tribological Behavior of Cylinder Liner/Piston Ring

  • 摘要: 研究了阶梯升温条件下缸套/活塞环的摩擦学特性,并分别采用FT-IR、Laser-Raman谱仪及X射线光电子能谱仪对摩擦磨损过程中润滑油及减摩剂(MoDTC)的摩擦化学变化进行了分析。结果表明,基础油和含MoDTC的润滑油均可以保证摩擦副在较高温度下具有相对较低的摩擦系数,在阶梯升温过程中,摩擦系数曲线上出现μ值显著下降的峰谷,其特点与油样类型有关,分析认为墚采用含MoDTC的油样润滑时,摩擦系数曲线上出现的低温峰从主要与MoDTC在摩擦磨损过程中分解成MoS2有关;而高温峰谷的出现既取决于润滑油裂解为石墨碳的程度,也与MoDTC的存在有关。

     

    Abstract: The tribological behavior of cylinder liner/piston ring was investigated with a stepwise heating mode. The oxidative degradation of the lubricant (SJ/CF 5W 30) and anti friction modifier (MoDTC) during friction and wear process was analyzed by means of Fourier transform infrared spectrometry (FT IR), laser Raman spectrometry, and X ray photoelectron spectroscopy, respectively. It has been observed that low coefficient of friction of the cylinder liner/piston ring pair can be maintained even at relatively high temperature under the lubrication of lubricant SJ/CF 5W 30 and of the lubricant containing MoDTC. Furthermore, valleys corresponding to a shape decrease of the friction coefficient appear on the friction coefficient curve, which is related to the oxidative degradation of the lubricant and the additive MoDTC during the friction process. When lubricated with the lubricant containing MoDTC, the valley at lower temperature is attributed to MoS 2 derived from the decomposition of MoDTC during friction process, while the valley at higher temperature is dependent on both the extent of pyrolyzing into graphitic carbon of the lubricant and the degradation of the additive MoDTC to MoS 2.

     

/

返回文章
返回