Structures and High Temperature Friction and Wear Performances of Ti/Ni-Doped Carbonaceous Mesophases
作者： Zhang Ruijun , Wang Hong , Li Yanjie
DOI: 10.1007/S11249-008-9359-5
关键词: Microcrystalline 、 Scanning electron microscope 、 Raman spectroscopy 、 Materials science 、 Diffractometer 、 Metallurgy 、 Composite material 、 Crystallinity 、 Titanium 、 Carbon steel 、 Ball mill
摘要: Metallic elements Ti and Ni were doped into the coal tar pitch-derived carbonaceous mesophase (CM) through mechanical alloying in a high-energy ball milling apparatus. The structures for raw Ti/Ni-doped mesophases characterized by X-ray diffractometer. friction wear behavior of CMs as lubricating additives at different applied loads temperatures investigated using MMU-5G high temperature tester. Worn morphologies lower 45# carbon steel specimens observed scanning electron microscope (SEM). substances on worn surfaces examined Raman spectroscopic technique. results have shown that CM shows an increase crystallinity comparison to CM, implying transition more ordered caused catalytic graphitization due Ti/Ni. alloying, when used additives, displayed obvious anti-friction resistant effect, lager load, coefficient severity. In addition, load increases, show rise degree, corresponding microcrystalline planar size (La) becomes larger.
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