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Author Ren, Shu bin ♦ Shen, Xiao yu ♦ He, Xin bo ♦ Qu, Xuan hui
Source SpringerLink
Content type Text
Publisher University of Science and Technology Beijing
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword microstructure ♦ composites ♦ interfaces ♦ pressureless infiltration ♦ oxidation ♦ Materials Science ♦ Metallic Materials ♦ Characterization and Evaluation of Materials ♦ Ceramics, Glass, Composites, Natural Methods ♦ Surfaces and Interfaces, Thin Films ♦ Tribology, Corrosion and Coatings
Abstract The microstructure of a pressureless infiltrating 55vol% oxidized SiC preform by Al-8Mg alloy was characterized by transmission electron microscopy (TEM), high resolution TEM (HRTEM), field emission scanning electron microscopy (FE-SEM), and X-ray diffraction. The TEM image of the interface between Al and SiC shows that the surface of SiC is covered by a rough nanocrystal layer of MgAl$_{2}$O$_{4}$, Al$_{2}$O$_{3}$, and Si, produced by the interfacial reaction of Al, Mg, and SiO$_{2}$ on the surface of SiC. The Al-SiC interface is also examined by HRTEM to be better understood how MgAl$_{2}$O$_{4}$ and Al$_{2}$O$_{3}$ are produced. Dendritic Al$_{2}$O$_{3}$ crystals are embedded in the pores of the composite generated from the mutual bonding of SiO$_{2}$ on the surface of SiC. Columnar AlN crystals of about 250 nm in length are bunched vertically on the SiC particle surface.
ISSN 16744799
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-05-26
Publisher Place Beijing
e-ISSN 1869103X
Journal International Journal of Minerals, Metallurgy, and Materials
Volume Number 18
Issue Number 2
Page Count 6
Starting Page 223
Ending Page 228

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Source: SpringerLink