Effect and role of alloyed yttrium on the fireside corrosion behaviour of Ni-Fe based alloys for 750 °C ultra-supercritical boiler applications

Add time:07/16/2019    Source:sciencedirect.com

The influence of alloyed yttrium (0.15–0.3 wt.%) on the fireside corrosion behaviour of Ni-Fe based alloy was investigated at 750 °C. Results show that external scales of Cr2O3 and Al oxide, as well as internal Ti sulphide form during the corrosion regardless of the chemical composition of alloys. However, the scale thickness and corrosion rate are reduced by the alloyed-yttrium, e.g. the mass gain of 0.3 wt.% yttrium-contained alloy after 50 h corrosion is ∼60% the value of the yttrium-free alloy. The yttrium doping in Cr sulphide particles in oxide scales most likely accounts for such a positive effect.

We also recommend Trading Suppliers and Manufacturers of Yttrium oxide sulfide (cas 11099-13-1). Pls Click Website Link as below: cas 11099-13-1 suppliers

Prev:Oxidation of tellurium dyes induced by mercury: More insights on the naked-eye and fluorescent Hg2+ detection
Next:Steam regenerative removal of hydrogen sulfide from hot syngas by a novel tin oxide and yttrium oxide sorbent)