ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
After examining practical structural materials for use in the high-temperature environmentsof waste incinerators, it was found that a Ni-Cr-W casting alloy is promising. However, thecorrosion reaches its peak in the vicinity of 900°C. This peak is related to the behavior of chloridesthat form in the interior of the alloy. As the chlorides continuously generate and decompose, the Clrecycles, accelerating corrosion. It is thought that when the temperature rises, the chlorides vaporizeoutside the alloy, suppressing Cl recycling and thus reducing the amount of corrosion. Adding Al tothe alloy generates highly volatile AlCl3, making it possible to prevent the accumulation ofchlorides in the vicinity of 900°C and lower the corrosion peak. As a result of conducting exposuretesting for a year at an actual incinerator, it was demonstrated that adding Al is an effective way toimprove corrosion resistance
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.522-523.555.pdf
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