Abstract
Ytterbium (Yb)- and silicon (Si)-rich ytterbium silicides (Yb5Si3, and Yb3Si5) were successfully fabricated by arc-melting and heat treatment. The degradation behavior of both silicides was evaluated by means of oxidation tests under three different conditions: Air, air-H2O, and steam. The results showed that the degradation of these Yb-silicides in air was accelerated relative to that in air–H2O and in steam. Although Yb3Si5 formed an un-oxidized region in air–H2O and in steam, a complex phase transformation occurred as a result of the decrease in the amount of Yb in Yb3Si5, caused by exposure to heat, while the liquid phase evolved below the melting point of Si. The liquid phases did not form upon exposure of Yb5Si3 to heat, whereas Yb5Si3 was more oxidized and the amount of SiO2 formed during heat exposure in air-H2O and steam is higher than Yb3Si5.
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.
