Abstract
Previous work by the present workers has indicated that sprayed molybdenum coatings on steel were beneficial in resisting fretting wear in the temperature range 20–300 °C. Beyond this temperature range the oxidation rate of molybdenum increased rapidly and limited its use. Such coatings were mixtures of metal and oxide and provided an elevated temperature “glaze” which appeared to lubricate the surface and to reduce significantly the level of fretting damage. In developing a coating for use over a wider temperature range, mixtures of elements were selected which would provide the possibility of surface glaze formation. Mixtures of Fe-Cr and Ni-Al alloys were arc sprayed onto a low alloy steel and tested under conditions of fretting at 20, 475 and 700 °C. Coatings containing iron and chromium developed a glaze oxide at 475 and 700 °C with resultant low wear. The nickel-based coating did not develop the glaze oxide at 475 °C but did so at 700 °C.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.