Anomalous high temperature oxidation of Sm 2(Fe,Co,Cu,Zr) 17 particles
2012 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 65, 453-460 p.Article in journal (Refereed) Published
Sm 2Co 17 alloys are attractive as high temperature permanent magnets; however their magnetic properties are prone to degrade by oxidation. The oxidation mechanism is not clearly understood, and inconsistent results are reported in the literature.This work correlates the oxidation of Sm 2(Co,Fe,Cu,Zr) 17 with microstructural and microchemical changes as a consequence of chemical reaction of alloy particles with their environment at high temperature. Thermogravimetric analysis suggests a change in oxidation mechanism occurs at 550°C. Energy dispersive X-ray spectroscopy suggests this is related to the loss of Sm by sublimation.
Place, publisher, year, edition, pages
2012. Vol. 65, 453-460 p.
Intermetallic phases, Oxidation, Permanent magnets, Sm 2Co 17
IdentifiersURN: urn:nbn:se:kth:diva-104931DOI: 10.1016/j.corsci.2012.08.049ISI: 000311192800049ScopusID: 2-s2.0-84867234354OAI: oai:DiVA.org:kth-104931DiVA: diva2:568076
QC 201211152012-11-152012-11-142013-01-09Bibliographically approved