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

Kamrani, S. and Penther, D. and Ghasemi, A. and Riedel, R. and 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) pp. 1742-1748. ISSN 09218831
[Article] , (2018)

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

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.

Item Type: Article
Erschienen: 2018
Creators: Kamrani, S. and Penther, D. and Ghasemi, A. and Riedel, R. and Fleck, C.
Title: Microstructural characterization of Mg-SiC nanocomposite synthesized by high energy ball milling
Language: English
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.

Journal or Publication Title: Advanced Powder Technology
Volume: 29
Number: 7
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: High-energy ball milling, Mg-SiC nanocomposite, Morphological changes, Microstructure
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 07 Jun 2018 07:54
DOI: 10.1016/j.apt.2018.04.009
Official URL: https://doi.org/10.1016/j.apt.2018.04.009
Funders: 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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