中国物理B ›› 2011, Vol. 20 ›› Issue (1): 10703-010703.doi: 10.1088/1674-1056/20/1/010703
周庆莉1, 施宇蕾1, 赵冬梅1, 张存林1, 赵嵩卿2, 赵卉2, 宝日玛2, 朱守明2, 苗青2, 田璐3, 赵昆3
Tian Lu(田璐)a)b),Zhou Qing-Li(周庆莉)c),Zhao Kun(赵昆)a)b)†, Shi Yu-Lei(施宇蕾)c),Zhao Dong-Mei(赵冬梅)c),Zhao Song-Qing(赵嵩卿)b), Zhao Hui(赵卉)b), Bao Ri-Ma(宝日玛)b),Zhu Shou-Ming(朱守明) b), Miao Qing(苗青)b),and Zhang Cun-Lin(张存林)c)
摘要: The optical properties of four kinds of lubricating greases (urea, lithium, extreme pressure lithium, molybdenum disulfide lithium greases) with different NLGL (National Lubricant Grease Institute of America) numbers were investigated using terahertz time-domain spectroscopy. Greases with different NLGL grades have unique spectral features in the terahertz range. Comparison of the experimental data with predictions based on Lorentz--Lorenz theory exhibited that the refractive indices of each kind of lubricating grease were dependent on the their consistency. In addition, molybdenum disulfide (MoS2) as a libricant additive shows strong absorption from 0.2 to 1.4 THz, leading to higher absorption of MoS2-lithium grease than that of lithium grease.
中图分类号: (Optical instruments and equipment)