Contribution of core-loss fine structures to the characterization of ion irradiation damages in the nanolaminated ceramic Ti3AlC2
2013 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 61, no 19, 7348-7363 p.Article in journal (Refereed) Published
The effect of low-energy ion irradiation on the nanolaminated Ti3AlC2 is investigated by means of X-ray diffraction, transmission electron microscopy, electron energy loss and X-ray absorption spectroscopy. The chemical sensitivity and local order probing from core-loss edges provide new insights into the structural modifications induced under irradiation. From the analysis of the C K energy loss near-edge structure and Al K X-ray absorption near-edge structure by ab initio calculations, the influence of the layered structure of this compound on the irradiation damage is demonstrated, and damage is found to be preferentially localized in the aluminum planes of the structure. On the basis of comparisons between calculations and experimental spectra, a structural model is proposed for the irradiated state. This study emphasizes the utility of core-loss fine structure analysis to enhance understanding of ion irradiation-induced damage in complex crystalline materials.
Place, publisher, year, edition, pages
Elsevier , 2013. Vol. 61, no 19, 7348-7363 p.
Ion irradiation, Ti3AlC2, Electron energy loss spectroscopy, X-ray absorption spectroscopy, Electronic structure calculation
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-102783DOI: 10.1016/j.actamat.2013.08.041ISI: 000327683700029OAI: oai:DiVA.org:liu-102783DiVA: diva2:683880
Funding Agencies|SOLEIL synchrotron facility||Swedish Research Council (VR)|621-2009-5258621-2012-4430|Linnaeus Strong Research Environment LiLi-NFM||2014-01-072013-12-262015-01-13