Microwave combustion synthesis of in situ Al{sub 2}O{sub 3} and Al{sub 3}Zr reinforced aluminum matrix composites

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.03.074· OSTI ID:22475856

Zhu, Heguo ^[1]; Hua, Bo; Cui, Tao; Huang, Jiewen; Li, Jianliang ^[1]; Xie, Zonghan ^[2]

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1. College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
2. School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430073 (China)

Al{sub 2}O{sub 3} and Al{sub 3}Zr reinforced aluminum matrix composites were fabricated from Al and ZrO{sub 2} powders by SiC assisted microwave combustion synthesis. The microstructure and reaction pathways were analyzed by using differential scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). The results showed that the heating rate during microwave synthesis was very high and the entire process took several minutes and that the ignition temperature of the reaction was much lower than that of conventional methods. In addition, the resulting microstructure was found to be finer than that prepared by the conventional methods and no cracks can be seen in the Al{sub 3}Zr reinforcements. As such, the newly developed composites have potential for safety-critical applications where catastrophic failure is not tolerated.

• OSTI ID: 22475856
• Journal Information: Materials Research Bulletin, Vol. 68; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALORIMETRY
COMBUSTION
COMPOSITE MATERIALS
FAILURES
MICROSTRUCTURE
MICROWAVE RADIATION
POWDERS
SCANNING ELECTRON MICROSCOPY
SILICON CARBIDES
SPECTROSCOPY
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES