Effect of mechanical factors on tribological properties of palm oil methyl ester blended lubricant
Effect of mechanical factors on tribological properties of palm oil methyl ester blended lubricant
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DOI：
10.1016/s0043-1648(00)00319-7
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发表时间：
2000-04
期刊：
影响因子：
5
通讯作者：
M. Maleque;H. Masjuki;A. Haseeb
中科院分区：
文献类型：
--
作者：
M. Maleque;H. Masjuki;A. Haseeb
采用钢-铸铁摩擦副，研究了载荷和温度对5%棕榈油甲酯（POME）混合润滑剂摩擦学性能的影响。在改进的通用磨损和摩擦试验机上，使用静止钢球和往复运动铸铁板进行磨损和摩擦测量。测试条件为接触压力，400 MPa;平均接触速度，0.34 m/s;往复行程，80 mm;负载，100-1100 N（固定温度）;以及温度，40-140°C（固定负载）。使用扫描电子显微镜（SEM）研究磨痕表面，以了解所涉及的磨损机制。使用ISL粘度计和TAN/TBN分析仪对台架试验后的润滑油进行分析，以研究润滑油降解性能。结果表明，在较低的载荷（高达500 N）和温度（高达100°C）下，5% POME润滑剂下的磨损率较低，而在较高的载荷和温度下，磨损率较高。POME作为添加剂在商业润滑剂中的摩擦行为表明边界润滑区的普遍性。粘度测试结果表明，5%的POME可以改善矿物基润滑剂的粘度指数（VI）性能高达500 N的负荷。然而，在本次调查中，腐蚀磨损和点蚀的损伤表面上的主要磨损模式在较高的温度。
The effects of mechanical factors viz. applied load and temperature on the tribological performance of 5% palm oil methyl ester (POME) blended lubricant were studied using a steel–cast iron pair. Wear and frictional measurements were made using a stationary steel ball and a reciprocating cast iron plate in a modified universal wear and friction testing machine. The test conditions were contact pressure, 400 MPa; mean contact velocity, 0.34 m/s; reciprocating stroke, 80 mm; loads, 100–1100 N (fixed temperature); and temperature, 40–140°C (fixed load). Wear scar surfaces were investigated using scanning electron microscopy (SEM) to understand the wear mechanisms involved. Analysis of post bench test lubricating oils was performed using an ISL viscometer and TAN/TBN analyzers to investigate the lubricating oil degradation properties. Results showed that at lower loads (up to 500 N) and temperatures (up to 100°C), the wear rates under 5% POME lubricant are lower, whereas at higher loads and temperatures, the wear rates are higher. The friction behavior of POME as an additive in commercial lubricant indicates the prevalence of the boundary lubrication regime. The viscosity test results showed that 5% POME can improve the viscosity index (VI) properties of mineral-based lubricant up to 500 N load. However, in this investigation, corrosive wear and pits on the damaged surface are the dominant wear mode at higher temperature.