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Mechanical alloying has been used to form nanocomposite in an Al–20wt%Sn alloy to promote its sliding wear performance, in particular the high load-carrying capability. X-ray diffraction and scanning electron microscopy characterization reveal that the nanocomposite is a structure of nanoscaled Sn particles distributed homogeneously in nanocrystalline Al matrix with typical size of the both smaller...
Al–Sn bearing alloys with fine and homogeneous distribution of Sn dispersoids were prepared by sintering the mechanically alloyed Al–Sn powders. The microstructure evolution of the Al–20wt.%Sn alloy during sintering was examined by using X-ray diffraction, scanning electron microscopy. Two typical distributions of Sn phase can be obtained by controlling the sintering temperature. Microhardness indentation...
A ball-on-disc wear tester was employed to study the effects of an oxy-nitrided steel surface on the lubricating performance of oil additive tricresyl phosphate. Mechanisms of the effects were discussed based on the analytical results obtained with several surface analysis methods. It was found that tricresyl phosphate showed much better anti-scuffing and anti-wear properties on an oxy-nitrided steel...
A ball on disc machine was employed to study the tribological behavior of the oil additive sulfurized olefin on oxynitrided steel surface. Disc wear surfaces were analyzed with a X-ray photoelectron spectrometer and an Auger electron spectrometer. It was found that sulfurized olefin showed a very good effect on increasing load carrying capacity and a certain effect on decreasing friction for oxynitrided...
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