Abstract
The wear behaviour of a SiAlON and a SiC whisker reinforced Al2O3 composite in dry sliding contact against Inconel 718 was investigated. For tribological characterization, the worn contact surfaces were analysed using tribometer data and calculation of wear volume in addition to SEM/EDX analysis. The surface contact temperatures were estimated by finite element simulations.The tribological behaviour is distinct for each ceramic. The wear in SiAlON undergoes an exponential decay with increasing frictional power due to the formation of lubricous tribolayers that separate both contacting surfaces; once the frictional power is high enough tribochemical wear dominates and delamination of the tribolayers takes place. The wear of Al2O3–SiC is lower than that of SiAlON especially at high frictional power, which can be mainly attributed to the chemical stability of the alumina matrix and the formation of stable lubricous tribolayers.FEM simulations indicated high contact temperatures with steep gradients in the depth.
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.
