Tribological properties of biomass-derived oils (bio-oils) were experimentally investigated, and the properties were compared with that of standard mineral oils used for lubrication purposes. Bio-oils were obtained from fast pyrolysis (using poultry and pine), gasification (“gasitar” using pine) and hydrothermal liquefaction processes (using Scenedesmus and Nannocholoropsis). The friction and wear tests were conducted using a ball on the disk tribometer test. The results showed that the coefficient of friction (COF) were around 0.02 for both gasitar and Scenedesmus bio-oil; whereas, catalytic and non-catalytic pyrolysis oils had a COF around 0.1. The wear measurements showed that catalytic fast pyrolysis bio-oils had lower wear followed by non-catalytic bio-oil and “gasitar”. Nannocholoropsis bio-oil had the highest amount of wear, and algal bio-oils showed higher wear compared to other oils. The bio-oil chemical analysis indicated that catalytic and non-catalytic fast pyrolysis bio-oil had higher oxygen content, while algal bio-oil had higher nitrogenates. Gasitar had higher hydrocarbon content with lower oxygen and nitrogenates making it a favorable lubricating oil.

对生物质衍生油（生物油）的摩擦学特性进行了实验研究，并将其特性与用于润滑目的的标准矿物油的特性进行了比较。生物油是从快速热解（使用家禽和松树）、气化（使用松树的“gasitar”）和热液液化过程（使用Scenedesmus和Nannocholoropsis）获得的。摩擦和磨损测试使用圆盘摩擦计测试中的球进行。结果表明，gasitar 和Scenedesmus的摩擦系数 (COF) 都在 0.02 左右生物油；而催化和非催化热解油的 COF 约为 0.1。磨损测量表明，催化快速热解生物油的磨损较低，其次是非催化生物油和“gasitar”。Nannocholoropsis生物油的磨损量最高，与其他油相比，藻类生物油的磨损量更高。生物油化学分析表明，催化和非催化快速热解生物油含氧量较高，而藻类生物油含氮量较高。Gasitar 具有较高的碳氢化合物含量和较低的氧和氮，使其成为一种有利的润滑油。