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The corrison performance of three Fe–Al model alloys (10, 20, 45, at.%Al), was examined at 650° C in air beneath a KCl solid deposit and in the presence of trace KCl vapor. The two low-Al-Content Fe–10Al and Fe–20Al alloys experienced accelerated corrosion yet exhibited similar degradation behavior regardless of the solid or vapor state of KCl. The corrosion products consist of an outermost layer...
The corrosion of Co-15 wt.% Y has been studiedat 600-800°C inH2-H2S-CO2 mixturesproviding a sulfur pressure of 10-8 atm at600-800°C and of 10-7 atm at 800°Cand an oxygen pressure of 10-24 atm at 600°C and of10-20 atm at 700-800°C. The corrosionrates in such sulfidizing-oxidizing atmospheres werecompared with those of pure cobalt and yttrium. Theaddition of yttrium to cobalt is only slightly beneficial,...
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