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This paper reports the preparation and structure characterization of dialkyldithiophosphate (DDP) modified Mo-S compound nanoclusters by a chemical method and identified by UV-Vis absorption spectra, FTIR. XPS, and 31 P NMR. Mo-S compound nanocluster as an additive in paraffin oil is found to significantly reduce wear and friction of the steel balls in a four-ball test. When the Mo/S/DDP...
Hydraulic damage tests have been carried out on five types of non-metallic coating materials in slurry water. A rotating disk test rig was used to simulate silt abrasion and cavitation erosion with natural silt at periphery speeds of 30 and 40 m s -1 . The resistances of the various coatings to silt abrasion, and the combination of abrasion and cavitation, have been measured and compared...
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