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Biomass is often considered as a low carbon alternative to fossil fuels in the power industry. However, the heat exchangers in biomass plants can suffer from chloride-based aggressive fireside corrosion. A commercially available amorphous Fe–Cr–B alloy was deposited onto a stainless steel substrate by HVOF thermal spray and laser cladding. The controlled environment corrosion tests were conducted...
Laser clads and HVOF coatings from a stellite 6 alloy (Co–Cr–W–C alloy) on 304 stainless steel substrates were exposed both bare and with KCl deposits in 500 ppm HCl with 5% O2 for 250 h at 700 °C. SEM/EDX and PXRD analyses with Rietveld refinement were used for assessment of the attack and for analysis of the scales. The bare samples suffered from scale spallation and the scale was mostly composed...
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