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We have explored the contact conditions under which zinc dialkyl dithiophosphate (ZDDP) is corrosive and, in the presence of carbon black, increases wear. It was found that the corrosivity of ZDDP to steel is due to a load dependent mechanochemical reaction and leads to the antagonism between ZDDP and carbon black which is also likely to be load dependent. Depth-profiled Auger spectroscopic analysis...
Extensive work was carried out to improve the performance of cast irons used for slurry transport in the oil sands industry. Because of complex condition of the multi-phase fluid containing oil sand particles, erosion-corrosion damage has long been an issue. High chromium cast irons (HCCIs) are currently used for slurry pumps, showing high resistance to sand-containing slurry erosion. However, further...
High interstitial austenitic stainless steels have been shown to exhibit superior mechanical properties, which include a unique combination of high strength and high toughness, due to the positive effects of the combination of carbon and nitrogen in solid solution. By the addition of molybdenum, a significant improvement of their localized corrosion resistance has been achieved. Further strengthening...
Protective coatings have been gaining prominence in research related to graphene based compounds over the recent years. The present study aims to reveal the novel anti-corrosive properties of the coatings achieved by co-depositing the carbon allotropes. Electroless Ni-P-rGO coatings were successfully obtained on low carbon steel substrates by adding various concentrations of rGO particles to the conventional...
Inflammation may develop due to the implantation of orthopedic devices and inflammatory cell-based chemical species may affect the fretting corrosion behavior of CoCrMo alloy. The effect of simulated inflammatory (SI) conditions and acid on the fretting corrosion behavior of CoCrMo was studied. SI conditions included phosphate buffered saline (PBS) with H2O2 and PBS with Fenton reaction (Fe3+, H2O...
This paper looks into the influences of solution treatment on the cavitation erosion and corrosion resistances of a CrMnNi austenitic stainless steel. Cavitation erosion pit formation is mainly associated with twin boundaries, slip lines and martensite traces (ε and α′). These pits subsequently grow both across slip lines and martensite traces and along twin boundaries, eventually coalescing to form...
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