Abstract
In the present study, friction and wear properties of bulk Fe2B with different Cr additions were examined under dry friction and water lubrication conditions. The morphology, structure, mechanical properties and tribological properties were investigated by OM, SEM, XRD and XPS. The results show that there is no obvious new phase generated and the crystal structure has no changes with Cr addition. Cr element solubilizes in Fe2B gains without any segregation, only bits of (Fe, Cr)2B crystals formed. With the increasing of Cr addition, the fracture toughness increases first then decreases, and 2Cr sample has the highest toughness. Under dry friction condition, the friction coefficient and wear loss are all decrease first and then increase. 2Cr sample has the highest friction coefficient and wear loss. The tribochemical products form a lubricating film to reduce the friction coefficient and wear loss. And the wear mechanism is mainly brittle fracture. Under water lubrication condition, the friction coefficient drops remarkably, then slightly rises up. In contrast, the wear loss increases first and then decreases. 2Cr sample has the lowest friction coefficient, but the highest wear loss. The wear mechanism is mainly tribo-chemical wear in water. A comparison of the results under dry friction and water lubrication conditions, for the same sample, the friction coefficient is lower, but the wear loss is higher in water.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
