Cavitation erosion resistance of diamond-like carbon coating on stainless steel
作者： Feng Cheng , Shuyun Jiang
DOI: 10.1016/J.APSUSC.2013.11.044
关键词: Delamination 、 Coating 、 Scanning electron microscope 、 Metallurgy 、 Materials science 、 Erosion corrosion 、 Energy-dispersive X-ray spectroscopy 、 Cavitation 、 Diamond-like carbon 、 Cathodic arc deposition
摘要: Abstract Two diamond-like carbon (DLC) coatings are prepared on stainless steel 304 by cathodic arc plasma deposition technology at different substrate bias voltages and currents (−200 V/80 A, labeled DLC-1, −100 V/60 A, DLC-2). Cavitation tests performed using a rotating-disk test rig to explore the cavitation erosion resistance of DLC coating. The mass losses, surface morphologies, chemical compositions phase constituents specimens after examined digital balance, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) X-ray diffraction (XRD), respectively. results indicate that DLC-2 can elongate incubation period steel, leading an excellent as compared untreated specimens. After duration 100 h test, serious damaged surfaces plenty scratches be observed specimens, while only few grooves tiny pits coatings. It is concluded that, decreasing micro defects increasing adhesion reduce delamination coating, continues in coating failure, eroded subjected combined action from slurry erosion.
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