Chemical and physical characterization by EELS of strontium hexanoate reverse micelles and strontium carbonate nanophase produced during tribological experiments

被引:28
作者
Mansot, JL [1 ]
Golabkan, V [1 ]
Romana, L [1 ]
Césaire, T [1 ]
机构
[1] Univ Antilles Guyane, Fac Sci Exactes & Nat, Grp Tecnol Surfaces & Interfaces, Campus Fouillole, F-97159 Pointe a Pitre, Guadeloupe, France
关键词
electron energy-loss spectroscopy; reverse micelles; tribology;
D O I
10.1046/j.1365-2818.2003.01171.x
中图分类号
TH742 [显微镜];
学科分类号
摘要
Electron energy-loss spectroscopy (EELS) in the analytical electron microscope has been used to characterize nanometre-scale phases of overbased strontium 3,5-dimethylhexanoate reverse micelles and the tribological film obtained during a friction test when the phases are used as lubricant additives. Accurate chemical, molecular and structural information on these materials are deduced by interpreting the EELS near-edge structure. This approach allows confirmation of the composite structure of the micelles, which contain a mineral core and amorphous strontium carbonate surrounded by an organic shell. It also allows identification of the chemical composition and physical structure of the tribological film as an assembly of pure strontium carbonate microcrystals, i.e. strontianite, distributed in an amorphous intergranular phase.
引用
收藏
页码:110 / 118
页数:9
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