Characterisation of nano-grains in MgB2 superconductors by transmission Kikuchi diffraction. (May 2015)

• Record Type: Journal Article
• Authors: Wong, D.C.K.; Yeoh, W.K.; Trimby, P.W.; De Silva, K.S.B.; Bao, P.; Li, W.X.; Xu, X.; Dou, S.X.; Ringer, S.P.; Zheng, R.K.
• Is Part Of: Scripta materialia. Volume 101(2015)
• Page Start: 36
• Page End: 39
• Publication Date: 2015-05
• Subjects: Transmission Kikuchi diffraction (TKD) -- Scanning electron microscope (SEM) -- Focused ion beam (FIB) -- Superconductors; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.01.012
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : We report the first application of the emerging transmission Kikuchi diffraction technique in the scanning electron microscope to investigate nano-grain structures in polycrystalline MgB2 superconductors. Two sintering conditions were considered, and the resulting differences in superconducting properties are correlated to differences in grain structure. A brief comparison to X-ray diffraction results is presented and discussed. This work focusses more on the application of this technique to reveal grain structure, rather than on the detailed differences between the two sintering temperatures.