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Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling

Kamrani, S. ; Penther, D. ; Ghasemi, A. ; Riedel, R. ; Fleck, C. :
Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling.
[Online-Edition: https://doi.org/10.1016/j.apt.2018.04.009]
In: Advanced Powder Technology, 29 (7) S. 1742-1748. ISSN 09218831
[Artikel] , (2018)

Offizielle URL: https://doi.org/10.1016/j.apt.2018.04.009

Kurzbeschreibung (Abstract)

High-energy ball milling is successfully used to produce magnesium matrix nanocomposites reinforced with SiC nanoparticles. Changes in morphology and microstructural features of the milled powders were characterized in order to highlight advantages of the mechanical milling process and evaluate the role of the SiC nanoparticles. It was observed that with increasing volume fraction of SiC nanoparticles, a finer nanocomposite powder with more uniform particle size distribution is obtained. A homogeneous distribution of SiC nanoparticles, even up to 10% volume fraction, in magnesium matrix after 25 h milling was confirmed by elemental mapping and TEM results. The analysis of the XRD patterns accompanied by dark-field TEM images revealed that magnesium crystallites refine to fine nanocrystalline sizes after the mechanical milling. The results showed that the crystallite size of the magnesium matrix reduced with increasing SiC nanoparticle content in addition to the induced lattice strain.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Kamrani, S. ; Penther, D. ; Ghasemi, A. ; Riedel, R. ; Fleck, C.
Titel: Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling
Sprache: Englisch
Kurzbeschreibung (Abstract):

High-energy ball milling is successfully used to produce magnesium matrix nanocomposites reinforced with SiC nanoparticles. Changes in morphology and microstructural features of the milled powders were characterized in order to highlight advantages of the mechanical milling process and evaluate the role of the SiC nanoparticles. It was observed that with increasing volume fraction of SiC nanoparticles, a finer nanocomposite powder with more uniform particle size distribution is obtained. A homogeneous distribution of SiC nanoparticles, even up to 10% volume fraction, in magnesium matrix after 25 h milling was confirmed by elemental mapping and TEM results. The analysis of the XRD patterns accompanied by dark-field TEM images revealed that magnesium crystallites refine to fine nanocrystalline sizes after the mechanical milling. The results showed that the crystallite size of the magnesium matrix reduced with increasing SiC nanoparticle content in addition to the induced lattice strain.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Advanced Powder Technology
Band: 29
(Heft-)Nummer: 7
Verlag: Elsevier Science Publishing
Freie Schlagworte: High-energy ball milling, Mg-SiC nanocomposite, Morphological changes, Microstructure
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
Hinterlegungsdatum: 07 Jun 2018 07:54
DOI: 10.1016/j.apt.2018.04.009
Offizielle URL: https://doi.org/10.1016/j.apt.2018.04.009
Sponsoren: The authors gratefully acknowledge the financial support by the DFG (Deutsche Forschungsgemeinschaft) and the support by the members of Non-Metallic Inorganic Materials group, Inst. of Materials Science at TUD for providing the ball mill equipment.
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