Structure and composition of ternary carbides in carbon fibre reinforced Mg-Al alloys

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  • Max Planck Institute of Microstructure Physics
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Original languageEnglish
Pages (from-to)1263-1277
Number of pages15
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume79
Issue number6
Publication statusPublished - Jun 1999

Abstract

The characteristics of the interlayers in metal matrix composites strongly influence the materials properties. We have investigated the formation of such layers in carbon-fibre reinforced Mg-Al alloys, produced via a gas-pressure meltinfiltration process. Results of high-voltage electron microscopy, high-resolution electron microscopy, selected area diffraction and electron energy loss spectroscopy with analysis of near-edge fine structures (ELNES) of the relevant ionization edges (Mg-L23Al-L23C-K, Mg-K and Ald-K) revealed that ternary carbides of approximate composition Al2MgC2formed at the fibre/matrix interfaces. Analyses of ELNES point to a close relationship in terms of crystal chemistry between the ternary carbide Al2MgC2and the binary carbidel4C3For Al2MgC2a structure is proposed, with metal atoms in a close-packed arrangement filled with carbon atoms in octahedral and trigonal-bipyramidal interstices.

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Cite this

Structure and composition of ternary carbides in carbon fibre reinforced Mg-Al alloys. / Feldhoff, Armin; Pippel, Eckhard; Woltersdorf, Jörg.
In: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, Vol. 79, No. 6, 06.1999, p. 1263-1277.

Research output: Contribution to journal › Article › Research › peer review

Feldhoff, A, Pippel, E & Woltersdorf, J 1999, 'Structure and composition of ternary carbides in carbon fibre reinforced Mg-Al alloys', Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, vol. 79, no. 6, pp. 1263-1277. https://doi.org/10.1080/01418619908210360
Feldhoff, A., Pippel, E., & Woltersdorf, J. (1999). Structure and composition of ternary carbides in carbon fibre reinforced Mg-Al alloys. Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, 79(6), 1263-1277. https://doi.org/10.1080/01418619908210360
Feldhoff A, Pippel E, Woltersdorf J. Structure and composition of ternary carbides in carbon fibre reinforced Mg-Al alloys. Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties. 1999 Jun;79(6):1263-1277. doi: 10.1080/01418619908210360
Feldhoff, Armin ; Pippel, Eckhard ; Woltersdorf, Jörg. / Structure and composition of ternary carbides in carbon fibre reinforced Mg-Al alloys. In: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties. 1999 ; Vol. 79, No. 6. pp. 1263-1277.
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