Abstract
The oxidation and hot corrosion behaviors of the NiAlY alloy, NiCrAlY alloy and NiSiAlY alloys with different Si content (1, 3 and 5 wt%) were investigated at 750 ℃. With the addition of Si, the oxidation resistance of the NiSiAlY alloys was significantly improved compared to the undoped NiAlY alloy. The doped Si promoted the formation of the protective oxide scales. Moreover, the NiSiAlY alloys exhibited enhanced resistance to the NaCl-induced hot corrosion in both dry and humid environments. Si played a beneficial role in restraining the internal corrosion and consumption of Al. In addition, the oxidation and hot corrosion mechanisms of the tested alloys were also discussed.
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 call
