Comparison of interface mechanics characteristics of DLC coating deposited on bearing steel and ceramics
Source abstract
Abstract
Abstract The load response of a coating and substrate system was built using interface mechanics theory. The characteristics of interface mechanics of diamond-like carbon (DLC) coatings deposited on bearing steel (M50) and ceramics (silicon nitride, Si3N4) were calculated, where the results showed that Si3N4 substrate could bear greater stresses along the interface than M50 under similar surface load and DLC coating conditions. Since the elastic modulus of ceramics is greater than that of the steel's, when a thicker coating is deposited, there will be a greater increase of interface normal stress for ceramics than for steel, as well as a greater elastic modulus of coatings meaning a greater interface normal stress. The interface transverse stress can be small when the difference of elastic modulus between coating and substrate is minor, meaning a better match. From the scratch test results, the interface bonding capacity of DLC coating with Si3N4 and M50 substrate were verified.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Diamond and Carbon-based Materials Research · Metal and Thin Film Mechanics · Force Microscopy Techniques and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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