Abstract The effects of the thermophysical properties of crambe, linseed, and jojoba oils, typical petroleum-based lubricant (PBL), and blends of crambe oil and PBL on their tribological performance were investigated. Biolubricants showed better lubricity (i.e., lower coefficient of friction). At 55 N load, linseed and jojoba oils had the lowest wear and PBL had the highest wear. At 90 and 160 N normal loads crambe and PBL and their blends demonstrated the lowest wear and linseed and jojoba oils presented the highest wear. Crambe oil and PBL lubrication regimes start in a elastohydrodynamic regime at low normal load and transform to a mixed regime at higher normal loads, whereas jojoba oil, linseed oil, and the blend sample of PBL and crambe oil follow a mixed lubrication regime at low normal loads and convert to a boundary lubrication regime as the normal load is increased. Further, results indicated that crambe oil, with the lowest coefficient of friction and wear, high viscosity and viscosity index, and low pour point, has a high potential for partial replacement of PBLs. Graphical abstract in separate file

中文翻译：

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对各种来源的生物润滑剂、石油基润滑剂以及石油基润滑剂和克兰贝油混合物的摩擦学性能和物理化学性质的比较研究

摘要 研究了海葵油、亚麻籽油和荷荷巴油、典型的石油基润滑剂 (PBL) 以及海葵油和 PBL 的混合物的热物理特性对其摩擦学性能的影响。生物润滑剂表现出更好的润滑性（即较低的摩擦系数）。在 55 N 负荷下，亚麻籽油和荷荷巴油的磨损最低，PBL 的磨损最高。在 90 和 160 N 的正常载荷下，crambe 和 PBL 及其混合物表现出最低的磨损，亚麻籽油和荷荷巴油的磨损最高。Crambe 油和 PBL 润滑状态在低正常载荷下以弹性流体动力学状态开始，并在较高的正常载荷下转变为混合状态，而荷荷巴油、亚麻籽油、PBL 和 crambe 油的混合样品在低法向载荷下遵循混合润滑状态，并随着法向载荷的增加转变为边界润滑状态。此外，结果表明，克兰姆油具有最低的摩擦和磨损系数、高粘度和粘度指数以及低倾点，具有部分替代 PBL 的潜力。单独文件中的图形摘要