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Grain Contrast Imaging in UHV SLEEM
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SYSNO ASEP 0340746 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Grain Contrast Imaging in UHV SLEEM Author(s) Mikmeková, Šárka (UPT-D) RID, SAI, ORCID
Hovorka, Miloš (UPT-D)
Müllerová, Ilona (UPT-D) RID, SAI, ORCID
Man, O. (CZ)
Pantělejev, L. (CZ)
Frank, Luděk (UPT-D) RID, SAI, ORCIDNumber of authors 6 Source Title Materials Transactions. - : Japan Institute of Metals and Materials - ISSN 1345-9678
Roč. 51, č. 2 (2010), s. 292-296Number of pages 5 s. Language eng - English Country JP - Japan Keywords scanning low energy electron microscopy ; electron backscatter diffraction (EBSD) ; grain contrast ; ultra-fine grained materials Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects OE08012 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20650511 - UPT-D (2005-2011) UT WOS 000276538900019 EID SCOPUS 77949718926 DOI 10.2320/matertrans.MC200919 Annotation Study of the grain structure in the equal channel angular pressing processed copper by means of the cathode lens equipped ultrahigh vacuum scanning low energy electron microscope is reported. The grain contrast was found achieving its maximum at electron energies below about 30 eV where it alternated its sign and exhibited dependence on electron energy specific for the grain orientation. The energy dependence of the electron reflectance seemed to be capable of serving as a fingerprint enabling determination of the crystalline orientation. In the cathode lens mode at hundreds of eV fine details of the microstructure are also observable including twins and low angle grain boundaries. This is explained by acquisition of high-angle backscattered slow electrons, normally not acquired in standard scanning electron microscopes. The very low energy electron reflectance is promising as an alternative to the EBSD method owing to its high resolution and fast data acquisition. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2010
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