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:
Experiments involving metal dusting in carbonaceous atmosphere and oxidation in air havebeen carried out at 593 and 704oC using T22, T91 and 800 alloy steels. The effect of Cr on thesetwo processes can be understood because of their compositions. In general, the resistance to bothmetal dusting up to 1000 hours and oxidation up to 456 hours has been found to improve withincrease in Cr content from 2.36 to 21.6%. However, mechanisms change from spalling to oxidescale in oxidation and from uniform metal dusting to pitting in metal dusting as the amount of Crincreases in these steels. Pitting corrosion shows higher C carbon concentration in the pits than atlocations away from the pits. A detailed analysis has been performed to evaluate the scale andspalled materials in terms of oxide characterization using XRD, AES, SEM, EDS on SEM, opticalmicroscopy and TEM
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4226.pdf
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