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国外文献 > 1.轴承 > 1. 基础理论与机制 > 摩擦与润滑

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标 题： A comparative study on the tribological behaviour of hexagonal boron nitride (h-BN) as lubricating micro-particles - An additive in porous sliding bearings for a car clutch
六方氮化硼（h-BN）作为润滑微粒的摩擦学行为比较研究——用于汽车离合器多孔滑动轴承的添加剂
作 者： Z. Pawfak
T. Kaldonski
R. Pai
E. Bayraktar
A. Oloyede
关键词： Tribology  [摩擦学]
Lubricant micro-particles-additive  [ 润滑剂微粒添加剂]
Hexagonal boron nitride (h-BN)  [ 六方氮化硼（h-BN）]
Porous bearings  [ 多孔轴承]
出版年： 2009
期刊名： Wear
穿戴
年卷期： 2009, vol.267, no.pt2
摘 要： The present paper is based on experimental studies of self-lubricated porous sliding bearings with hexagonal boron nitride (h-BN) as an additive. The friction coefficients of powder matrix lubricated by (h-BN+oil) were measured at varying loads of 1.05-2.0 MPa and sliding speeds of 135 and 2.5 m/s. The results are discussed in the form of performance characteristics such as the coefficient of friction, bearing temperature, and load-carrying capacity. The micro-particles of the h-BN additive were between 1 and 2μm in diameter. The effect of the PV (pressure-velocity) parameter on the transition time to seizure for porous bush composites impregnated by the lubricant has been studied. It was found that the addition of the micro-particles to the oil decreased the friction coefficient about twice as compared to self-lubricated bearings lubricated only by oil. The main effect of (h-BN micro-particles + oil) in comparison to Mobil DTE-BB lubricant appears to be that the impregnation of h-BN micro-particles persists for a long period of time and the micro-particles are gradually released, being supplied to the contact surfaces. For a manufacturing application, the porous bearings were assembled in a car clutch.

本文基于以六方氮化硼（h-BN）作为添加剂的自润滑多孔滑动轴承的实验研究。在载荷1.05–2.0 MPa、滑动速度为135和2.5 m/s的条件下，测量了粉末基体与(h-BN+油)润滑体系的摩擦系数。结果通过摩擦系数、轴承温度和承载能力等性能指标进行讨论。h-BN添加剂的微粒直径在1至2 μm之间。本研究还探讨了压力-速度（PV）参数对含润滑剂浸渍的多孔衬套复合材料发生粘结过渡时间的影响。结果表明，添加微粒后，其摩擦系数比仅用油润滑的自润滑轴承降低约一倍。与Mobil DTE-BB润滑油相比，(h-BN微粒+油)体系的主要作用在于，h-BN微粒能够长时间保持浸润状态，并逐渐释放到接触面，从而持续提供润滑。在制造应用中，多孔轴承被安装在汽车离合器上。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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