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Deposition Kinetics of Thermally Degraded Lubricant on Metal Surfaces

机译：在金属表面上沉积热降解润滑剂的动力学

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The increasing need for thermally stable lubricants has resulted in a strong demand for a quantitative, in- situ measurement method to study the thermal degradation of lubricants. This paper highlights on a newly developed quartz crystal microbalance (QCM) system utilized to study the deposition kinetics of degraded residuals of lubricant on metal surfaces. The in-situ deposition kinetics of two pentaerythritol tetrapelargonate based lubricants were measured in real-time during thermally stressing at elevated temperatures (180-220°C) for 20-30 hour periods. The deposition rate increased with increasing temperature and varied on the different electrode surfaces. In addition significant differences in the deposition kinetics were attributed to the different synthetic processes of the basestock ester and the presence of different trace components in the lubricants.
机译：对热稳定润滑剂的需求不断增加导致对测量，原位测量方法的强烈需求，以研究润滑剂的热降解。本文在新开发的石英晶体微稳定（QCM）系统上亮点，用于研究金属表面上润滑剂残留物的沉积动力学。在升高温度（180-220℃）的热应力（180-220℃）持续20-30小时的热应力期间，原位沉积动力学在基于季戊四醇曲线酸盐基润滑剂的实时测量。沉积速率随着温度的增加而增加并且在不同的电极表面上变化。此外，沉积动力学的显着差异归因于基础库酯的不同合成方法以及润滑剂中存在不同的痕量组分。

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