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Austenitic stainless steels are traditionally not good bearing materials due to their tendency to gall when rubbing against other hard alloys. Even worse, they cannot be well-lubricated by hydrocarbon oils. In this study, an alternative carburization process, low-temperature colossal supersaturation (LTCSS), offers a potential solution by demonstrating an improvement of wear-resistance by three orders...
Since the idea of using ionic liquids (ILs) as lubricants was raised in 2001, many studies have been conducted in this area and results have demonstrated superior lubricating performance for a variety of ILs. It is widely believed that a protective tribo-boundary film is formed on the contact area by tribochemical reactions between the metal surface and the IL during the wear process and, as a result,...
This paper reports a wear reduction by up to six orders of magnitude for Ti–6Al–4V alloy when treated by an oxygen diffusion (OD) process and subsequently tested in a zinc-dialkyl-dithiophosphate (ZDDP)-containing lubricant. In addition to case hardening, it is discovered that OD enables the formation of an anti-wear boundary film on the titanium surface. Transmission electron microscopy and surface...
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