Abstract
Isothermal oxidation tests were performed on Ir, Ir–3Hf, Ir/Pt, and Ir–3Hf/Pt in static air at 1100 °C for 200 h. The microstructural evolution and changes in the composition of the alloys were characterisation by performing scanning electron microscopy (SEM) and field-emission electron probe microanalysis (FE-EPMA). The results indicated that the specimens of all the Ir-based alloys exhibited linear mass loss due to the formation/evaporation of gaseous Ir oxide species (mainly IrO 3). The oxidation behaviour, including mass change kinetics, evaporation of gaseous IrO 3, and the role of Hf and Pt are discussed.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
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 call
