In Situ Observation of Lubricant Film of Semi-Solid Lubricants at EHL Contact Using Micro-FTIR
In Situ Observation of Lubricant Film of Semi-Solid Lubricants at EHL Contact Using Micro-FTIR
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使用 Micro-FTIR 对 EHL 接触处的半固体润滑剂的润滑膜进行原位观察
DOI：
10.2474/trol.11.376
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发表时间：
2016
期刊：
影响因子：
1
通讯作者：
S. Mori
中科院分区：
文献类型：
--
作者：
Koji Takiwatari;Yasushi Hoshi;H. Nanao;T. Hojo;S. Mori
半固体润滑剂，如润滑脂和凝胶，是油、增稠剂和胶凝剂的混合物。在这项研究中，尿素增稠剂和胶凝剂的浓度在弹流润滑（EHL）接触点进行了研究，通过原位观察与显微傅里叶变换红外光谱仪（micro-FTIR）。Micro-FTIR与球盘润滑测试仪结合使用。在动态条件下用显微红外光谱对润滑膜进行了分析。在2850-3000 cm处的C-H伸缩模和3000-3500 cm处的N-H伸缩模的特征峰分别来自油和脲稠化剂和胶凝剂。增稠剂和胶凝剂的浓度由这些特征IR峰估计。结果表明，在赫兹接触区，尿素增稠剂和胶凝剂的浓度急剧增加。同时，在静水压下，使用金刚石压砧室获得了红外光谱。证实了尿素增稠剂和胶凝剂的氢键在高压条件下稳定。
Semi-solid lubricants, such as grease and gels, are mixtures of oil, thickeners, and gel agents. In this study, the concentration of the urea thickener and gel agent at the point of elastohydrodynamic lubrication (EHL) contact was investigated by in situ observation with a micro-Fourier transform infrared spectrometer (micro-FTIR). Micro-FTIR was used in conjunction with a ball-on-disk lubrication tester. The lubricant film was analyzed by micro-FTIR under dynamic conditions. Characteristic peaks correlating to the C-H stretching mode at 2850-3000 cm and the N-H stretching mode at 3000-3500 cm were found to originate from the oil and the urea thickener and gel agent, respectively. The concentration of the thickener and gel agent were estimated from these characteristic IR peaks. The results showed that the concentration of urea thickener and gel agent was increased drastically at the Hertzian contact region. Meanwhile, infrared spectra under hydrostatic pressure were obtained using a diamond-anvil cell. It was confirmed that the hydrogen bonding of the urea thickener and gel agent was stabilized under high-pressure conditions.
用金刚石砧池构建热可逆凝胶润滑剂相图
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
N.;OHNO
通讯作者：
OHNO
影响因子：
1
作者：
Daisuke Tominaga;Sobahan Mia;S. Morita;N. Ohno;Y. Shitara
通讯作者：
Daisuke Tominaga;Sobahan Mia;S. Morita;N. Ohno;Y. Shitara